72239578 has 8 divisors (see below), whose sum is σ = 108491040. Its totient is φ = 36075900.

The previous prime is 72239569. The next prime is 72239597. The reversal of 72239578 is 87593227.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 19848 + ... + 23203.

It is an arithmetic number, because the mean of its divisors is an integer number (13561380).

Almost surely, 2^72239578 is an apocalyptic number.

72239578 is a deficient number, since it is larger than the sum of its proper divisors (36251462).

72239578 is a wasteful number, since it uses less digits than its factorization.

72239578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43892.

The product of its digits is 211680, while the sum is 43.

The square root of 72239578 is about 8499.3869190666. The cubic root of 72239578 is about 416.4776818341.

The spelling of 72239578 in words is "seventy-two million, two hundred thirty-nine thousand, five hundred seventy-eight".