166269920 has 24 divisors (see below), whose sum is σ = 392813064. Its totient is φ = 66507904.

The previous prime is 166269919. The next prime is 166269941. The reversal of 166269920 is 29962661.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 519434 + ... + 519753.

It is an arithmetic number, because the mean of its divisors is an integer number (16367211).

Almost surely, 2^166269920 is an apocalyptic number.

166269920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166269920 is an abundant number, since it is smaller than the sum of its proper divisors (226543144).

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

166269920 is a wasteful number, since it uses less digits than its factorization.

166269920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039202 (or 1039194 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 166269920 is about 12894.5693995573. The cubic root of 166269920 is about 549.8841849806.

The spelling of 166269920 in words is "one hundred sixty-six million, two hundred sixty-nine thousand, nine hundred twenty".