166156432 has 40 divisors (see below), whose sum is σ = 347547200. Its totient is φ = 76498560.

The previous prime is 166156427. The next prime is 166156447. The reversal of 166156432 is 234651661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118069 + ... + 119467.

It is an arithmetic number, because the mean of its divisors is an integer number (8688680).

Almost surely, 2^166156432 is an apocalyptic number.

It is an amenable number.

166156432 is an abundant number, since it is smaller than the sum of its proper divisors (181390768).

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

166156432 is a wasteful number, since it uses less digits than its factorization.

166156432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991 (or 1985 counting only the distinct ones).

The product of its digits is 25920, while the sum is 34.

The square root of 166156432 is about 12890.1680361429. The cubic root of 166156432 is about 549.7590481748.

The spelling of 166156432 in words is "one hundred sixty-six million, one hundred fifty-six thousand, four hundred thirty-two".