20164375 has 40 divisors (see below), whose sum is σ = 31489920. Its totient is φ = 12540000.

The previous prime is 20164373. The next prime is 20164379. The reversal of 20164375 is 57346102.

It is not a de Polignac number, because 20164375 - 2¹ = 20164373 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20164373) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 47916 + ... + 48334.

It is an arithmetic number, because the mean of its divisors is an integer number (787248).

Almost surely, 2^20164375 is an apocalyptic number.

20164375 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20164375 is a deficient number, since it is larger than the sum of its proper divisors (11325545).

20164375 is an equidigital number, since it uses as much as digits as its factorization.

With its predecessor (20164374) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (442).

20164375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 442 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 20164375 is about 4490.4760326718. The cubic root of 20164375 is about 272.1833709807.

The spelling of 20164375 in words is "twenty million, one hundred sixty-four thousand, three hundred seventy-five".