72021592 has 16 divisors (see below), whose sum is σ = 135131040. Its totient is φ = 35986656.

The previous prime is 72021577. The next prime is 72021601. The reversal of 72021592 is 29512027.

It is a self number, because there is not a number n which added to its sum of digits gives 72021592.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19873 + ... + 23215.

It is an arithmetic number, because the mean of its divisors is an integer number (8445690).

Almost surely, 2^72021592 is an apocalyptic number.

It is an amenable number.

72021592 is a deficient number, since it is larger than the sum of its proper divisors (63109448).

72021592 is a wasteful number, since it uses less digits than its factorization.

72021592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6042 (or 6038 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 72021592 is about 8486.5535996658. The cubic root of 72021592 is about 416.0583467224.

The spelling of 72021592 in words is "seventy-two million, twenty-one thousand, five hundred ninety-two".