71392920 has 64 divisors (see below), whose sum is σ = 223499520. Its totient is φ = 18209664.

The previous prime is 71392901. The next prime is 71392921. The reversal of 71392920 is 2929317.

It is a super-2 number, since 2×71392920² = 10193898052252800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71392921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10174 + ... + 15693.

It is an arithmetic number, because the mean of its divisors is an integer number (3492180).

Almost surely, 2^71392920 is an apocalyptic number.

It is an amenable number.

71392920 is an abundant number, since it is smaller than the sum of its proper divisors (152106600).

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

71392920 is a wasteful number, since it uses less digits than its factorization.

71392920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25904 (or 25900 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 71392920 is about 8449.4331170795. The cubic root of 71392920 is about 414.8442246919.

The spelling of 71392920 in words is "seventy-one million, three hundred ninety-two thousand, nine hundred twenty".