72788422 has 48 divisors (see below), whose sum is σ = 135793152. Its totient is φ = 29106000.

The previous prime is 72788413. The next prime is 72788431. The reversal of 72788422 is 22488727.

It is an interprime number because it is at equal distance from previous prime (72788413) and next prime (72788431).

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 23 ways as a sum of consecutive naturals, for example, 96547 + ... + 97297.

It is an arithmetic number, because the mean of its divisors is an integer number (2829024).

Almost surely, 2^72788422 is an apocalyptic number.

72788422 is a deficient number, since it is larger than the sum of its proper divisors (63004730).

72788422 is a wasteful number, since it uses less digits than its factorization.

72788422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833 (or 826 counting only the distinct ones).

The product of its digits is 100352, while the sum is 40.

The square root of 72788422 is about 8531.6130948373. The cubic root of 72788422 is about 417.5297589554.

The spelling of 72788422 in words is "seventy-two million, seven hundred eighty-eight thousand, four hundred twenty-two".