20479264 has 48 divisors (see below), whose sum is σ = 45722880. Its totient is φ = 8951040.

The previous prime is 20479243. The next prime is 20479279. The reversal of 20479264 is 46297402.

It is a super-4 number, since 4×20479264⁴ (a number of 30 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6609 + ... + 9199.

It is an arithmetic number, because the mean of its divisors is an integer number (952560).

Almost surely, 2^20479264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20479264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22861440).

20479264 is an abundant number, since it is smaller than the sum of its proper divisors (25243616).

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

20479264 is a wasteful number, since it uses less digits than its factorization.

20479264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2633 (or 2625 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 20479264 is about 4525.4020815835. The cubic root of 20479264 is about 273.5928739751.

It can be divided in two parts, 2047 and 9264, that added together give a palindrome (11311).

The spelling of 20479264 in words is "twenty million, four hundred seventy-nine thousand, two hundred sixty-four".