20522264 has 32 divisors (see below), whose sum is σ = 46565280. Its totient is φ = 8277504.

The previous prime is 20522251. The next prime is 20522287. The reversal of 20522264 is 46222502.

It is a congruent number.

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, 9827 + ... + 11730.

It is an arithmetic number, because the mean of its divisors is an integer number (1455165).

Almost surely, 2^20522264 is an apocalyptic number.

It is an amenable number.

20522264 is an abundant number, since it is smaller than the sum of its proper divisors (26043016).

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

20522264 is a wasteful number, since it uses less digits than its factorization.

20522264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21587 (or 21583 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 20522264 is about 4530.1505493747. The cubic root of 20522264 is about 273.7842263802.

Adding to 20522264 its reverse (46222502), we get a palindrome (66744766).

The spelling of 20522264 in words is "twenty million, five hundred twenty-two thousand, two hundred sixty-four".