161607328 has 24 divisors (see below), whose sum is σ = 320126688. Its totient is φ = 80305344.

The previous prime is 161607323. The next prime is 161607353. The reversal of 161607328 is 823706161.

It is a super-2 number, since 2×161607328² = 52233856926599168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161607293 and 161607302.

It is not an unprimeable number, because it can be changed into a prime (161607323) 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 3 ways as a sum of consecutive naturals, for example, 10276 + ... + 20707.

It is an arithmetic number, because the mean of its divisors is an integer number (13338612).

Almost surely, 2^161607328 is an apocalyptic number.

It is an amenable number.

161607328 is a deficient number, since it is larger than the sum of its proper divisors (158519360).

161607328 is a wasteful number, since it uses less digits than its factorization.

161607328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31156 (or 31148 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 161607328 is about 12712.4870894723. The cubic root of 161607328 is about 544.6953694140.

The spelling of 161607328 in words is "one hundred sixty-one million, six hundred seven thousand, three hundred twenty-eight".