20369764 has 6 divisors (see below), whose sum is σ = 35647094. Its totient is φ = 10184880.

The previous prime is 20369761. The next prime is 20369771. The reversal of 20369764 is 46796302.

It can be written as a sum of positive squares in only one way, i.e., 10497600 + 9872164 = 3240^2 + 3142^2 .

It is not an unprimeable number, because it can be changed into a prime (20369761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2546217 + ... + 2546224.

Almost surely, 2^20369764 is an apocalyptic number.

It is an amenable number.

20369764 is a deficient number, since it is larger than the sum of its proper divisors (15277330).

20369764 is a wasteful number, since it uses less digits than its factorization.

20369764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092445 (or 5092443 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 20369764 is about 4513.2874936126. The cubic root of 20369764 is about 273.1043802889.

The spelling of 20369764 in words is "twenty million, three hundred sixty-nine thousand, seven hundred sixty-four".