166033420 has 24 divisors (see below), whose sum is σ = 398480544. Its totient is φ = 56925696.

The previous prime is 166033403. The next prime is 166033421. The reversal of 166033420 is 24330661.

It is not an unprimeable number, because it can be changed into a prime (166033421) by changing a digit.

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, 592837 + ... + 593116.

It is an arithmetic number, because the mean of its divisors is an integer number (16603356).

Almost surely, 2^166033420 is an apocalyptic number.

166033420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

166033420 is an abundant number, since it is smaller than the sum of its proper divisors (232447124).

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

166033420 is a wasteful number, since it uses less digits than its factorization.

166033420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185969 (or 1185967 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 166033420 is about 12885.3956089831. The cubic root of 166033420 is about 549.6233454216.

The spelling of 166033420 in words is "one hundred sixty-six million, thirty-three thousand, four hundred twenty".