166872250 has 72 divisors (see below), whose sum is σ = 337537044. Its totient is φ = 61765200.

The previous prime is 166872229. The next prime is 166872259. The reversal of 166872250 is 52278661.

It is a happy number.

166872250 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 112805641 + 54066609 = 10621^2 + 7353^2 .

It is not an unprimeable number, because it can be changed into a prime (166872259) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3880729 + ... + 3880771.

Almost surely, 2^166872250 is an apocalyptic number.

166872250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166872250 is an abundant number, since it is smaller than the sum of its proper divisors (170664794).

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

166872250 is an equidigital number, since it uses as much as digits as its factorization.

166872250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 166872250 is about 12917.9042417878. The cubic root of 166872250 is about 550.5473889133.

The spelling of 166872250 in words is "one hundred sixty-six million, eight hundred seventy-two thousand, two hundred fifty".