20165736 has 16 divisors (see below), whose sum is σ = 50414400. Its totient is φ = 6721904.

The previous prime is 20165713. The next prime is 20165737. The reversal of 20165736 is 63756102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20165737) 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, 420096 + ... + 420143.

It is an arithmetic number, because the mean of its divisors is an integer number (3150900).

Almost surely, 2^20165736 is an apocalyptic number.

It is an amenable number.

20165736 is an abundant number, since it is smaller than the sum of its proper divisors (30248664).

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

20165736 is a wasteful number, since it uses less digits than its factorization.

20165736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840248 (or 840244 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 20165736 is about 4490.6275730682. The cubic root of 20165736 is about 272.1894945399.

The spelling of 20165736 in words is "twenty million, one hundred sixty-five thousand, seven hundred thirty-six".