161744032 has 24 divisors (see below), whose sum is σ = 318723552. Its totient is φ = 80798400.

The previous prime is 161744029. The next prime is 161744039. The reversal of 161744032 is 230447161.

It is a super-2 number, since 2×161744032² = 52322263775234048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161744039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56557 + ... + 59347.

It is an arithmetic number, because the mean of its divisors is an integer number (13280148).

Almost surely, 2^161744032 is an apocalyptic number.

It is an amenable number.

161744032 is a deficient number, since it is larger than the sum of its proper divisors (156979520).

161744032 is a wasteful number, since it uses less digits than its factorization.

161744032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612 (or 4604 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 161744032 is about 12717.8627135223. The cubic root of 161744032 is about 544.8489124715.

The spelling of 161744032 in words is "one hundred sixty-one million, seven hundred forty-four thousand, thirty-two".