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252091260 = 223251400507
BaseRepresentation
bin11110000011010…
…01101101111100
3122120100120012100
433001221231330
51004013410020
641003105100
76150511641
oct1701515574
9576316170
10252091260
1111a331993
1270512190
13402c5535
14256a1dc8
15171e8a90
hexf069b7c

252091260 has 36 divisors (see below), whose sum is σ = 764677368. Its totient is φ = 67224288.

The previous prime is 252091243. The next prime is 252091261. The reversal of 252091260 is 62190252.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252091261) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 700074 + ... + 700433.

It is an arithmetic number, because the mean of its divisors is an integer number (21241038).

Almost surely, 2252091260 is an apocalyptic number.

252091260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

252091260 is an abundant number, since it is smaller than the sum of its proper divisors (512586108).

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

252091260 is a wasteful number, since it uses less digits than its factorization.

252091260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1400522 (or 1400517 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 252091260 is about 15877.3820260142. The cubic root of 252091260 is about 631.7121980470.

The spelling of 252091260 in words is "two hundred fifty-two million, ninety-one thousand, two hundred sixty".

Divisors: 1 2 3 4 5 6 9 10 12 15 18 20 30 36 45 60 90 180 1400507 2801014 4201521 5602028 7002535 8403042 12604563 14005070 16806084 21007605 25209126 28010140 42015210 50418252 63022815 84030420 126045630 252091260