71572940 has 24 divisors (see below), whose sum is σ = 150958080. Its totient is φ = 28504448.

The previous prime is 71572939. The next prime is 71572967. The reversal of 71572940 is 4927517.

It is a self number, because there is not a number n which added to its sum of digits gives 71572940.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3020 + ... + 12339.

It is an arithmetic number, because the mean of its divisors is an integer number (6289920).

Almost surely, 2^71572940 is an apocalyptic number.

It is an amenable number.

71572940 is an abundant number, since it is smaller than the sum of its proper divisors (79385140).

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

71572940 is a wasteful number, since it uses less digits than its factorization.

71572940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15601 (or 15599 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 71572940 is about 8460.0791958468. The cubic root of 71572940 is about 415.1926139318.

The spelling of 71572940 in words is "seventy-one million, five hundred seventy-two thousand, nine hundred forty".