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252560560 = 2457607743
BaseRepresentation
bin11110000110111…
…00010010110000
3122121020101221211
433003130102300
51004123414220
641021125504
76154505110
oct1703342260
9577211854
10252560560
1111a62253a
12706b9894
134042b025
1425785040
151728cb5a
hexf0dc4b0

252560560 has 80 divisors (see below), whose sum is σ = 673099776. Its totient is φ = 86333184.

The previous prime is 252560531. The next prime is 252560573. The reversal of 252560560 is 65065252.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339549 + ... + 340291.

Almost surely, 2252560560 is an apocalyptic number.

252560560 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 252560560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336549888).

252560560 is an abundant number, since it is smaller than the sum of its proper divisors (420539216).

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

252560560 is a wasteful number, since it uses less digits than its factorization.

252560560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 252560560 is about 15892.1540390219. The cubic root of 252560560 is about 632.1039592912.

The spelling of 252560560 in words is "two hundred fifty-two million, five hundred sixty thousand, five hundred sixty".

Divisors: 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 280 560 607 743 1214 1486 2428 2972 3035 3715 4249 4856 5201 5944 6070 7430 8498 9712 10402 11888 12140 14860 16996 20804 21245 24280 26005 29720 33992 41608 42490 48560 52010 59440 67984 83216 84980 104020 169960 208040 339920 416080 451001 902002 1804004 2255005 3157007 3608008 4510010 6314014 7216016 9020020 12628028 15785035 18040040 25256056 31570070 36080080 50512112 63140140 126280280 252560560