164023940 has 12 divisors (see below), whose sum is σ = 344450316. Its totient is φ = 65609568.

The previous prime is 164023933. The next prime is 164023957. The reversal of 164023940 is 49320461.

It can be written as a sum of positive squares in 2 ways, for example, as 125260864 + 38763076 = 11192^2 + 6226^2 .

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, 4100579 + ... + 4100618.

It is an arithmetic number, because the mean of its divisors is an integer number (28704193).

Almost surely, 2^164023940 is an apocalyptic number.

164023940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164023940 is an abundant number, since it is smaller than the sum of its proper divisors (180426376).

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

164023940 is a wasteful number, since it uses less digits than its factorization.

164023940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8201206 (or 8201204 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 164023940 is about 12807.1831407222. The cubic root of 164023940 is about 547.3970004250.

The spelling of 164023940 in words is "one hundred sixty-four million, twenty-three thousand, nine hundred forty".