20164344 has 16 divisors (see below), whose sum is σ = 50410920. Its totient is φ = 6721440.

The previous prime is 20164321. The next prime is 20164349. The reversal of 20164344 is 44346102.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 840181 = 20164344 / (2 + 0 + 1 + 6 + 4 + 3 + 4 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20164349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420067 + ... + 420114.

Almost surely, 2^20164344 is an apocalyptic number.

20164344 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20164344 is an abundant number, since it is smaller than the sum of its proper divisors (30246576).

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

20164344 is a wasteful number, since it uses less digits than its factorization.

20164344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840190 (or 840186 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 20164344 is about 4490.4725809206. The cubic root of 20164344 is about 272.1832314989.

The spelling of 20164344 in words is "twenty million, one hundred sixty-four thousand, three hundred forty-four".