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70295840 = 255439349
BaseRepresentation
bin1000011000010…
…10000100100000
311220021101202122
410030022010200
5120443431330
610550403412
71512335066
oct414120440
9156241678
1070295840
113675333a
121b660568
1311743394
14949c036
1562885e5
hex430a120

70295840 has 24 divisors (see below), whose sum is σ = 166074300. Its totient is φ = 28118272.

The previous prime is 70295837. The next prime is 70295857. The reversal of 70295840 is 4859207.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 57820816 + 12475024 = 7604^2 + 3532^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70295840.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219515 + ... + 219834.

Almost surely, 270295840 is an apocalyptic number.

It is an amenable number.

70295840 is an abundant number, since it is smaller than the sum of its proper divisors (95778460).

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

70295840 is a wasteful number, since it uses less digits than its factorization.

70295840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439364 (or 439356 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 70295840 is about 8384.2614463052. The cubic root of 70295840 is about 412.7083049543.

The spelling of 70295840 in words is "seventy million, two hundred ninety-five thousand, eight hundred forty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 439349 878698 1757396 2196745 3514792 4393490 7029584 8786980 14059168 17573960 35147920 70295840