20344764 has 24 divisors (see below), whose sum is σ = 51787008. Its totient is φ = 6165040.

The previous prime is 20344759. The next prime is 20344789. The reversal of 20344764 is 46744302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76932 + ... + 77195.

It is an arithmetic number, because the mean of its divisors is an integer number (2157792).

Almost surely, 2^20344764 is an apocalyptic number.

It is an amenable number.

20344764 is an abundant number, since it is smaller than the sum of its proper divisors (31442244).

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

20344764 is a wasteful number, since it uses less digits than its factorization.

20344764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154145 (or 154143 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 20344764 is about 4510.5170435328. The cubic root of 20344764 is about 272.9926067045.

The spelling of 20344764 in words is "twenty million, three hundred forty-four thousand, seven hundred sixty-four".