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70137140 = 22510932173
BaseRepresentation
bin1000010111000…
…11010100110100
311212222100001212
410023203110310
5120423342030
610543140552
71511104313
oct413432464
9155870055
1070137140
1136655087
121b5a4758
13116b9088
14945a27a
156256595
hex42e3534

70137140 has 24 divisors (see below), whose sum is σ = 148643880. Its totient is φ = 27796608.

The previous prime is 70137139. The next prime is 70137149. The reversal of 70137140 is 4173107.

It can be written as a sum of positive squares in 4 ways, for example, as 9265936 + 60871204 = 3044^2 + 7802^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70137149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13907 + ... + 18266.

It is an arithmetic number, because the mean of its divisors is an integer number (6193495).

Almost surely, 270137140 is an apocalyptic number.

It is an amenable number.

70137140 is an abundant number, since it is smaller than the sum of its proper divisors (78506740).

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

70137140 is a wasteful number, since it uses less digits than its factorization.

70137140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32291 (or 32289 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 70137140 is about 8374.7919377140. The cubic root of 70137140 is about 412.3974939662.

The spelling of 70137140 in words is "seventy million, one hundred thirty-seven thousand, one hundred forty".

Divisors: 1 2 4 5 10 20 109 218 436 545 1090 2180 32173 64346 128692 160865 321730 643460 3506857 7013714 14027428 17534285 35068570 70137140