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250040220 = 223553611289
BaseRepresentation
bin11101110011101…
…00111110011100
3122102111100200220
432321310332130
51003002241340
640451121340
76124210143
oct1671647634
9572440626
10250040220
11119160a11
126b8a3250
133ca57ac1
14252ca75a
1516e40ed0
hexee74f9c

250040220 has 96 divisors (see below), whose sum is σ = 725578560. Its totient is φ = 64296960.

The previous prime is 250040213. The next prime is 250040243. The reversal of 250040220 is 22040052.

250040220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2500402202 = 125040223235296800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 250040220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 193336 + ... + 194624.

It is an arithmetic number, because the mean of its divisors is an integer number (7558110).

Almost surely, 2250040220 is an apocalyptic number.

250040220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250040220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362789280).

250040220 is an abundant number, since it is smaller than the sum of its proper divisors (475538340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

250040220 is a wasteful number, since it uses less digits than its factorization.

250040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415 (or 1413 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 250040220 is about 15812.6601177664. The cubic root of 250040220 is about 629.9943058190.

Adding to 250040220 its reverse (22040052), we get a palindrome (272080272).

The spelling of 250040220 in words is "two hundred fifty million, forty thousand, two hundred twenty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 53 60 61 106 122 159 183 212 244 265 305 318 366 530 610 636 732 795 915 1060 1220 1289 1590 1830 2578 3180 3233 3660 3867 5156 6445 6466 7734 9699 12890 12932 15468 16165 19335 19398 25780 32330 38670 38796 48495 64660 68317 77340 78629 96990 136634 157258 193980 204951 235887 273268 314516 341585 393145 409902 471774 683170 786290 819804 943548 1024755 1179435 1366340 1572580 2049510 2358870 4099020 4167337 4717740 8334674 12502011 16669348 20836685 25004022 41673370 50008044 62510055 83346740 125020110 250040220