20364512 has 48 divisors (see below), whose sum is σ = 46136160. Its totient is φ = 8667648.

The previous prime is 20364511. The next prime is 20364517. The reversal of 20364512 is 21546302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20364511) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 51098 + ... + 51494.

It is an arithmetic number, because the mean of its divisors is an integer number (961170).

Almost surely, 2^20364512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20364512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23068080).

20364512 is an abundant number, since it is smaller than the sum of its proper divisors (25771648).

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

20364512 is a wasteful number, since it uses less digits than its factorization.

20364512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20364512 is about 4512.7056185840. The cubic root of 20364512 is about 273.0809064857.

The spelling of 20364512 in words is "twenty million, three hundred sixty-four thousand, five hundred twelve".