20169964 has 48 divisors (see below), whose sum is σ = 38707200. Its totient is φ = 9172800.

The previous prime is 20169959. The next prime is 20169971. The reversal of 20169964 is 46996102.

It is a super-2 number, since 2×20169964² = 813654895522592, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 255277 + ... + 255355.

It is an arithmetic number, because the mean of its divisors is an integer number (806400).

Almost surely, 2^20169964 is an apocalyptic number.

It is an amenable number.

20169964 is a deficient number, since it is larger than the sum of its proper divisors (18537236).

20169964 is a wasteful number, since it uses less digits than its factorization.

20169964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214 (or 212 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 20169964 is about 4491.0983066506. The cubic root of 20169964 is about 272.2085158601.

The spelling of 20169964 in words is "twenty million, one hundred sixty-nine thousand, nine hundred sixty-four".