72004558 has 8 divisors (see below), whose sum is σ = 108054720. Its totient is φ = 35986320.

The previous prime is 72004549. The next prime is 72004561. The reversal of 72004558 is 85540027.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1183 + ... + 12058.

It is an arithmetic number, because the mean of its divisors is an integer number (13506840).

Almost surely, 2^72004558 is an apocalyptic number.

72004558 is a deficient number, since it is larger than the sum of its proper divisors (36050162).

72004558 is a wasteful number, since it uses less digits than its factorization.

72004558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15962.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 72004558 is about 8485.5499527137. The cubic root of 72004558 is about 416.0255431493.

The spelling of 72004558 in words is "seventy-two million, four thousand, five hundred fifty-eight".