72734871 has 16 divisors (see below), whose sum is σ = 109445760. Its totient is φ = 42561120.

The previous prime is 72734867. The next prime is 72734873. The reversal of 72734871 is 17843727.

It is not a de Polignac number, because 72734871 - 2² = 72734867 is a prime.

It is a super-2 number, since 2×72734871² = 10580722918773282, 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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37045 + ... + 38958.

It is an arithmetic number, because the mean of its divisors is an integer number (6840360).

Almost surely, 2^72734871 is an apocalyptic number.

72734871 is a deficient number, since it is larger than the sum of its proper divisors (36710889).

72734871 is a wasteful number, since it uses less digits than its factorization.

72734871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76046.

The product of its digits is 65856, while the sum is 39.

The square root of 72734871 is about 8528.4741308161. The cubic root of 72734871 is about 417.4273405533.

The spelling of 72734871 in words is "seventy-two million, seven hundred thirty-four thousand, eight hundred seventy-one".