72734870 has 32 divisors (see below), whose sum is σ = 141644160. Its totient is φ = 26732160.

The previous prime is 72734867. The next prime is 72734873. The reversal of 72734870 is 7843727.

It is an interprime number because it is at equal distance from previous prime (72734867) and next prime (72734873).

It is a super-2 number, since 2×72734870² = 10580722627833800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72734873) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 29900 + ... + 32240.

It is an arithmetic number, because the mean of its divisors is an integer number (4426380).

Almost surely, 2^72734870 is an apocalyptic number.

72734870 is a deficient number, since it is larger than the sum of its proper divisors (68909290).

72734870 is a wasteful number, since it uses less digits than its factorization.

72734870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 72734870 is about 8528.4740721890. The cubic root of 72734870 is about 417.4273386403.

The spelling of 72734870 in words is "seventy-two million, seven hundred thirty-four thousand, eight hundred seventy".