20164056 has 32 divisors (see below), whose sum is σ = 54993600. Its totient is φ = 6110240.

The previous prime is 20164051. The next prime is 20164063. The reversal of 20164056 is 65046102.

It is a super-2 number, since 2×20164056² = 813178308742272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20164051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37926 + ... + 38453.

It is an arithmetic number, because the mean of its divisors is an integer number (1718550).

Almost surely, 2^20164056 is an apocalyptic number.

It is an amenable number.

20164056 is an abundant number, since it is smaller than the sum of its proper divisors (34829544).

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

20164056 is a wasteful number, since it uses less digits than its factorization.

20164056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76399 (or 76395 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 20164056 is about 4490.4405129118. The cubic root of 20164056 is about 272.1819356613.

The spelling of 20164056 in words is "twenty million, one hundred sixty-four thousand, fifty-six".