161732976 has 80 divisors (see below), whose sum is σ = 431591424. Its totient is φ = 52157952.

The previous prime is 161732947. The next prime is 161732999. The reversal of 161732976 is 679237161.

161732976 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261820 + ... + 262436.

Almost surely, 2^161732976 is an apocalyptic number.

161732976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161732976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215795712).

161732976 is an abundant number, since it is smaller than the sum of its proper divisors (269858448).

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

161732976 is a wasteful number, since it uses less digits than its factorization.

161732976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798 (or 792 counting only the distinct ones).

The product of its digits is 95256, while the sum is 42.

The square root of 161732976 is about 12717.4280418644. The cubic root of 161732976 is about 544.8364978211.

The spelling of 161732976 in words is "one hundred sixty-one million, seven hundred thirty-two thousand, nine hundred seventy-six".