20620264 has 48 divisors (see below), whose sum is σ = 45511200. Its totient is φ = 8577504.

The previous prime is 20620241. The next prime is 20620283. The reversal of 20620264 is 46202602.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260977 + ... + 261055.

It is an arithmetic number, because the mean of its divisors is an integer number (948150).

Almost surely, 2^20620264 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 20620264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22755600).

20620264 is an abundant number, since it is smaller than the sum of its proper divisors (24890936).

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

20620264 is an equidigital number, since it uses as much as digits as its factorization.

20620264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 20620264 is about 4540.9540847712. The cubic root of 20620264 is about 274.2193352723.

Adding to 20620264 its reverse (46202602), we get a palindrome (66822866).

The spelling of 20620264 in words is "twenty million, six hundred twenty thousand, two hundred sixty-four".