72856070 has 32 divisors (see below), whose sum is σ = 157766400. Its totient is φ = 23664096.

The previous prime is 72856039. The next prime is 72856073. The reversal of 72856070 is 7065827.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 72856070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72856073) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26060 + ... + 28719.

It is an arithmetic number, because the mean of its divisors is an integer number (4930200).

Almost surely, 2^72856070 is an apocalyptic number.

72856070 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

72856070 is an abundant number, since it is smaller than the sum of its proper divisors (84910330).

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

72856070 is a wasteful number, since it uses less digits than its factorization.

72856070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54812.

The product of its (nonzero) digits is 23520, while the sum is 35.

The square root of 72856070 is about 8535.5767233386. The cubic root of 72856070 is about 417.6590666427.

The spelling of 72856070 in words is "seventy-two million, eight hundred fifty-six thousand, seventy".