20364136 has 16 divisors (see below), whose sum is σ = 41120100. Its totient is φ = 9398784.

The previous prime is 20364109. The next prime is 20364139. The reversal of 20364136 is 63146302.

It can be written as a sum of positive squares in 2 ways, for example, as 20196036 + 168100 = 4494^2 + 410^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20364136.

It is not an unprimeable number, because it can be changed into a prime (20364139) 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, 97801 + ... + 98008.

Almost surely, 2^20364136 is an apocalyptic number.

20364136 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20364136 is an abundant number, since it is smaller than the sum of its proper divisors (20755964).

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

20364136 is a wasteful number, since it uses less digits than its factorization.

20364136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195828 (or 195824 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 20364136 is about 4512.6639582402. The cubic root of 20364136 is about 273.0792257996.

The spelling of 20364136 in words is "twenty million, three hundred sixty-four thousand, one hundred thirty-six".