20369736 has 24 divisors (see below), whose sum is σ = 55168230. Its totient is φ = 6789888.

The previous prime is 20369717. The next prime is 20369747. The reversal of 20369736 is 63796302.

It can be written as a sum of positive squares in only one way, i.e., 12916836 + 7452900 = 3594^2 + 2730^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×20369736² = 829852289419392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20369736.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141385 + ... + 141528.

Almost surely, 2^20369736 is an apocalyptic number.

It is an amenable number.

20369736 is an abundant number, since it is smaller than the sum of its proper divisors (34798494).

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

20369736 is a wasteful number, since it uses less digits than its factorization.

20369736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282925 (or 282918 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 36.

The square root of 20369736 is about 4513.2843916598. The cubic root of 20369736 is about 273.1042551537.

The spelling of 20369736 in words is "twenty million, three hundred sixty-nine thousand, seven hundred thirty-six".