20349764 has 24 divisors (see below), whose sum is σ = 38035200. Its totient is φ = 9505440.

The previous prime is 20349751. The next prime is 20349773. The reversal of 20349764 is 46794302.

It is a super-2 number, since 2×20349764² = 828225789711392, which contains 22 as substring.

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, 767 + ... + 6425.

It is an arithmetic number, because the mean of its divisors is an integer number (1584800).

Almost surely, 2^20349764 is an apocalyptic number.

It is an amenable number.

20349764 is a deficient number, since it is larger than the sum of its proper divisors (17685436).

20349764 is a wasteful number, since it uses less digits than its factorization.

20349764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5723 (or 5721 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 20349764 is about 4511.0712696653. The cubic root of 20349764 is about 273.0149687437.

The spelling of 20349764 in words is "twenty million, three hundred forty-nine thousand, seven hundred sixty-four".