72856045 has 8 divisors (see below), whose sum is σ = 90247680. Its totient is φ = 56404560.

The previous prime is 72856039. The next prime is 72856073. The reversal of 72856045 is 54065827.

It is a happy number.

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

It is not a de Polignac number, because 72856045 - 2³ = 72856037 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72855995 and 72856013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234865 + ... + 235174.

It is an arithmetic number, because the mean of its divisors is an integer number (11280960).

Almost surely, 2^72856045 is an apocalyptic number.

It is an amenable number.

72856045 is a deficient number, since it is larger than the sum of its proper divisors (17391635).

72856045 is a wasteful number, since it uses less digits than its factorization.

72856045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470075.

The product of its (nonzero) digits is 67200, while the sum is 37.

The square root of 72856045 is about 8535.5752588797. The cubic root of 72856045 is about 417.6590188705.

The spelling of 72856045 in words is "seventy-two million, eight hundred fifty-six thousand, forty-five".