161152072 has 32 divisors (see below), whose sum is σ = 329040000. Its totient is φ = 73700928.

The previous prime is 161152001. The next prime is 161152081. The reversal of 161152072 is 270251161.

161152072 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 13872 + ... + 22687.

It is an arithmetic number, because the mean of its divisors is an integer number (10282500).

Almost surely, 2^161152072 is an apocalyptic number.

It is an amenable number.

161152072 is an abundant number, since it is smaller than the sum of its proper divisors (167887928).

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

161152072 is a wasteful number, since it uses less digits than its factorization.

161152072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36613 (or 36609 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 161152072 is about 12694.5686023590. The cubic root of 161152072 is about 544.1834102581.

The spelling of 161152072 in words is "one hundred sixty-one million, one hundred fifty-two thousand, seventy-two".