20479364 has 6 divisors (see below), whose sum is σ = 35838894. Its totient is φ = 10239680.

The previous prime is 20479363. The next prime is 20479367. The reversal of 20479364 is 46397402.

It can be written as a sum of positive squares in only one way, i.e., 19360000 + 1119364 = 4400^2 + 1058^2 .

It is not an unprimeable number, because it can be changed into a prime (20479363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2559917 + ... + 2559924.

It is an arithmetic number, because the mean of its divisors is an integer number (5973149).

Almost surely, 2^20479364 is an apocalyptic number.

It is an amenable number.

20479364 is a deficient number, since it is larger than the sum of its proper divisors (15359530).

20479364 is a wasteful number, since it uses less digits than its factorization.

20479364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5119845 (or 5119843 counting only the distinct ones).

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

The square root of 20479364 is about 4525.4131303120. The cubic root of 20479364 is about 273.5933192913.

It can be divided in two parts, 2047 and 9364, that added together give a palindrome (11411).

The spelling of 20479364 in words is "twenty million, four hundred seventy-nine thousand, three hundred sixty-four".