161407472 has 20 divisors (see below), whose sum is σ = 318629160. Its totient is φ = 79180608.

The previous prime is 161407459. The next prime is 161407481. The reversal of 161407472 is 274704161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94322 + ... + 96017.

It is an arithmetic number, because the mean of its divisors is an integer number (15931458).

Almost surely, 2^161407472 is an apocalyptic number.

It is an amenable number.

161407472 is a deficient number, since it is larger than the sum of its proper divisors (157221688).

161407472 is a wasteful number, since it uses less digits than its factorization.

161407472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190400 (or 190394 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 161407472 is about 12704.6240400887. The cubic root of 161407472 is about 544.4707394522.

The spelling of 161407472 in words is "one hundred sixty-one million, four hundred seven thousand, four hundred seventy-two".