72555338 has 16 divisors (see below), whose sum is σ = 116016000. Its totient is φ = 33931872.

The previous prime is 72555331. The next prime is 72555383. The reversal of 72555338 is 83355527.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (72555331) 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, 9083 + ... + 15086.

It is an arithmetic number, because the mean of its divisors is an integer number (7251000).

Almost surely, 2^72555338 is an apocalyptic number.

72555338 is a deficient number, since it is larger than the sum of its proper divisors (43460662).

72555338 is a wasteful number, since it uses less digits than its factorization.

72555338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24269.

The product of its digits is 126000, while the sum is 38.

The square root of 72555338 is about 8517.9421223674. The cubic root of 72555338 is about 417.0836093797.

The spelling of 72555338 in words is "seventy-two million, five hundred fifty-five thousand, three hundred thirty-eight".