166556232 has 48 divisors (see below), whose sum is σ = 453024000. Its totient is φ = 55280736.

The previous prime is 166556213. The next prime is 166556239. The reversal of 166556232 is 232655661.

It is a happy number.

166556232 is a `hidden beast` number, since 1 + 6 + 65 + 562 + 32 = 666.

166556232 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (166556239) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12369 + ... + 22047.

It is an arithmetic number, because the mean of its divisors is an integer number (9438000).

Almost surely, 2^166556232 is an apocalyptic number.

166556232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

166556232 is an abundant number, since it is smaller than the sum of its proper divisors (286467768).

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

166556232 is a wasteful number, since it uses less digits than its factorization.

166556232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9930 (or 9923 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 166556232 is about 12905.6666623619. Note that the first 5 decimals coincide. The cubic root of 166556232 is about 550.1996322144.

The spelling of 166556232 in words is "one hundred sixty-six million, five hundred fifty-six thousand, two hundred thirty-two".