161472236 has 12 divisors (see below), whose sum is σ = 294862512. Its totient is φ = 77225808.

The previous prime is 161472229. The next prime is 161472253. The reversal of 161472236 is 632274161.

It is a super-3 number, since 3×161472236³ (a number of 26 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 877475 + ... + 877658.

It is an arithmetic number, because the mean of its divisors is an integer number (24571876).

Almost surely, 2^161472236 is an apocalyptic number.

It is an amenable number.

161472236 is a deficient number, since it is larger than the sum of its proper divisors (133390276).

161472236 is a wasteful number, since it uses less digits than its factorization.

161472236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1755160 (or 1755158 counting only the distinct ones).

The product of its digits is 12096, while the sum is 32.

The square root of 161472236 is about 12707.1726202173. The cubic root of 161472236 is about 544.5435518347.

The spelling of 161472236 in words is "one hundred sixty-one million, four hundred seventy-two thousand, two hundred thirty-six".