72160734 has 16 divisors (see below), whose sum is σ = 145008000. Its totient is φ = 23939160.

The previous prime is 72160691. The next prime is 72160747. The reversal of 72160734 is 43706127.

It is a Curzon number.

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, 27234 + ... + 29765.

It is an arithmetic number, because the mean of its divisors is an integer number (9063000).

Almost surely, 2^72160734 is an apocalyptic number.

72160734 is an abundant number, since it is smaller than the sum of its proper divisors (72847266).

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

72160734 is a wasteful number, since it uses less digits than its factorization.

72160734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57215.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 72160734 is about 8494.7474359159. The cubic root of 72160734 is about 416.3261087824.

The spelling of 72160734 in words is "seventy-two million, one hundred sixty thousand, seven hundred thirty-four".