70457920 has 56 divisors (see below), whose sum is σ = 180694584. Its totient is φ = 26013696.

The previous prime is 70457869. The next prime is 70457923. The reversal of 70457920 is 2975407.

It can be written as a sum of positive squares in 4 ways, for example, as 166464 + 70291456 = 408^2 + 8384^2 .

It is not an unprimeable number, because it can be changed into a prime (70457923) 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, 4309 + ... + 12628.

It is an arithmetic number, because the mean of its divisors is an integer number (3226689).

Almost surely, 2^70457920 is an apocalyptic number.

It is an amenable number.

70457920 is an abundant number, since it is smaller than the sum of its proper divisors (110236664).

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

70457920 is a wasteful number, since it uses less digits than its factorization.

70457920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16967 (or 16957 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 70457920 is about 8393.9216103083. The cubic root of 70457920 is about 413.0252531426.

The spelling of 70457920 in words is "seventy million, four hundred fifty-seven thousand, nine hundred twenty".