166852420 has 48 divisors (see below), whose sum is σ = 401200128. Its totient is φ = 57098880.

The previous prime is 166852417. The next prime is 166852421. The reversal of 166852420 is 24258661.

It is not an unprimeable number, because it can be changed into a prime (166852421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120130 + ... + 121510.

It is an arithmetic number, because the mean of its divisors is an integer number (8358336).

Almost surely, 2^166852420 is an apocalyptic number.

166852420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166852420 is an abundant number, since it is smaller than the sum of its proper divisors (234347708).

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

166852420 is a wasteful number, since it uses less digits than its factorization.

166852420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 2258 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 166852420 is about 12917.1366796206. The cubic root of 166852420 is about 550.5255802399.

The spelling of 166852420 in words is "one hundred sixty-six million, eight hundred fifty-two thousand, four hundred twenty".