72856554 has 8 divisors (see below), whose sum is σ = 145713120. Its totient is φ = 24285516.

The previous prime is 72856547. The next prime is 72856561. The reversal of 72856554 is 45565827.

It is an interprime number because it is at equal distance from previous prime (72856547) and next prime (72856561).

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

72856554 is an admirable 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, 6071374 + ... + 6071385.

It is an arithmetic number, because the mean of its divisors is an integer number (18214140).

Almost surely, 2^72856554 is an apocalyptic number.

72856554 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72856554 is a wasteful number, since it uses less digits than its factorization.

72856554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12142764.

The product of its digits is 336000, while the sum is 42.

The square root of 72856554 is about 8535.6050752129. The cubic root of 72856554 is about 417.6599915098.

The spelling of 72856554 in words is "seventy-two million, eight hundred fifty-six thousand, five hundred fifty-four".