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253868970 = 23516575107
BaseRepresentation
bin11110010000110…
…11101110101010
3122200200212202110
433020123232222
51004442301340
641105143150
76201564525
oct1710335652
9580625673
10253868970
11120336573
127102aab6
1340798734
1425a05bbc
151744a680
hexf21bbaa

253868970 has 32 divisors (see below), whose sum is σ = 609772608. Its totient is φ = 67644288.

The previous prime is 253868959. The next prime is 253868977. The reversal of 253868970 is 79868352.

It is not an unprimeable number, because it can be changed into a prime (253868977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47157 + ... + 52263.

It is an arithmetic number, because the mean of its divisors is an integer number (19055394).

Almost surely, 2253868970 is an apocalyptic number.

253868970 is an abundant number, since it is smaller than the sum of its proper divisors (355903638).

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

253868970 is a wasteful number, since it uses less digits than its factorization.

253868970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6774.

The product of its (nonzero) digits is 725760, while the sum is 48.

The square root of 253868970 is about 15933.2661435124. The cubic root of 253868970 is about 633.1936346235.

The spelling of 253868970 in words is "two hundred fifty-three million, eight hundred sixty-eight thousand, nine hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 1657 3314 4971 5107 8285 9942 10214 15321 16570 24855 25535 30642 49710 51070 76605 153210 8462299 16924598 25386897 42311495 50773794 84622990 126934485 253868970