161624232 has 96 divisors (see below), whose sum is σ = 545762880. Its totient is φ = 41978880.

The previous prime is 161624207. The next prime is 161624233. The reversal of 161624232 is 232426161.

161624232 is a `hidden beast` number, since 1 + 6 + 1 + 624 + 2 + 32 = 666.

It is a super-2 number, since 2×161624232² = 52244784739179648, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 161624196 and 161624205.

It is not an unprimeable number, because it can be changed into a prime (161624233) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9033 + ... + 20120.

It is an arithmetic number, because the mean of its divisors is an integer number (5685030).

Almost surely, 2^161624232 is an apocalyptic number.

161624232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161624232 is an abundant number, since it is smaller than the sum of its proper divisors (384138648).

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

161624232 is a wasteful number, since it uses less digits than its factorization.

161624232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29183 (or 29176 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 161624232 is about 12713.1519301863. The cubic root of 161624232 is about 544.7143603216.

The spelling of 161624232 in words is "one hundred sixty-one million, six hundred twenty-four thousand, two hundred thirty-two".