72422564 has 24 divisors (see below), whose sum is σ = 130860576. Its totient is φ = 35048000.

The previous prime is 72422551. The next prime is 72422569. The reversal of 72422564 is 46522427.

It is a self number, because there is not a number n which added to its sum of digits gives 72422564.

It is not an unprimeable number, because it can be changed into a prime (72422569) 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, 19799 + ... + 23169.

It is an arithmetic number, because the mean of its divisors is an integer number (5452524).

Almost surely, 2^72422564 is an apocalyptic number.

It is an amenable number.

72422564 is a deficient number, since it is larger than the sum of its proper divisors (58438012).

72422564 is a wasteful number, since it uses less digits than its factorization.

72422564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3547 (or 3545 counting only the distinct ones).

The product of its digits is 26880, while the sum is 32.

The square root of 72422564 is about 8510.1447696264. The cubic root of 72422564 is about 416.8290373754.

The spelling of 72422564 in words is "seventy-two million, four hundred twenty-two thousand, five hundred sixty-four".