161724792 has 16 divisors (see below), whose sum is σ = 404312040. Its totient is φ = 53908256.

The previous prime is 161724781. The next prime is 161724821. The reversal of 161724792 is 297427161.

It is a self number, because there is not a number n which added to its sum of digits gives 161724792.

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, 3369243 + ... + 3369290.

Almost surely, 2^161724792 is an apocalyptic number.

161724792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161724792 is an abundant number, since it is smaller than the sum of its proper divisors (242587248).

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

161724792 is a wasteful number, since it uses less digits than its factorization.

161724792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6738542 (or 6738538 counting only the distinct ones).

The product of its digits is 42336, while the sum is 39.

The square root of 161724792 is about 12717.1062746208. The cubic root of 161724792 is about 544.8273077408.

The spelling of 161724792 in words is "one hundred sixty-one million, seven hundred twenty-four thousand, seven hundred ninety-two".