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254001020 = 225713672083
BaseRepresentation
bin11110010001110…
…11111101111100
3122200221120220012
433020323331330
51010011013040
641112042352
76202654520
oct1710737574
9580846805
10254001020
111204167a9
12710933b8
1340813880
1425a3bd80
1517474865
hexf23bf7c

254001020 has 96 divisors (see below), whose sum is σ = 666613248. Its totient is φ = 79149312.

The previous prime is 254001001. The next prime is 254001049. The reversal of 254001020 is 20100452.

It is a super-2 number, since 2×2540010202 = 129033036322080800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 254000986 and 254001004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120899 + ... + 122981.

It is an arithmetic number, because the mean of its divisors is an integer number (6943888).

Almost surely, 2254001020 is an apocalyptic number.

254001020 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 254001020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333306624).

254001020 is an abundant number, since it is smaller than the sum of its proper divisors (412612228).

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

254001020 is a wasteful number, since it uses less digits than its factorization.

254001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2179 (or 2177 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 254001020 is about 15937.4094507232. The cubic root of 254001020 is about 633.3034008630.

Adding to 254001020 its reverse (20100452), we get a palindrome (274101472).

The spelling of 254001020 in words is "two hundred fifty-four million, one thousand, twenty".

Divisors: 1 2 4 5 7 10 13 14 20 26 28 35 52 65 67 70 91 130 134 140 182 260 268 335 364 455 469 670 871 910 938 1340 1742 1820 1876 2083 2345 3484 4166 4355 4690 6097 8332 8710 9380 10415 12194 14581 17420 20830 24388 27079 29162 30485 41660 54158 58324 60970 72905 108316 121940 135395 139561 145810 189553 270790 279122 291620 379106 541580 558244 697805 758212 947765 976927 1395610 1814293 1895530 1953854 2791220 3628586 3791060 3907708 4884635 7257172 9071465 9769270 12700051 18142930 19538540 25400102 36285860 50800204 63500255 127000510 254001020