70520920 has 32 divisors (see below), whose sum is σ = 160852320. Its totient is φ = 27820800.

The previous prime is 70520911. The next prime is 70520959. The reversal of 70520920 is 2902507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9156 + ... + 14995.

It is an arithmetic number, because the mean of its divisors is an integer number (5026635).

Almost surely, 2^70520920 is an apocalyptic number.

It is an amenable number.

70520920 is an abundant number, since it is smaller than the sum of its proper divisors (90331400).

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

70520920 is a wasteful number, since it uses less digits than its factorization.

70520920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24235 (or 24231 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 70520920 is about 8397.6734873416. The cubic root of 70520920 is about 413.1483187462.

The spelling of 70520920 in words is "seventy million, five hundred twenty thousand, nine hundred twenty".