20232564 has 24 divisors (see below), whose sum is σ = 51501408. Its totient is φ = 6131040.

The previous prime is 20232559. The next prime is 20232581. The reversal of 20232564 is 46523202.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 76507 + ... + 76770.

It is an arithmetic number, because the mean of its divisors is an integer number (2145892).

Almost surely, 2^20232564 is an apocalyptic number.

It is an amenable number.

20232564 is an abundant number, since it is smaller than the sum of its proper divisors (31268844).

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

20232564 is a wasteful number, since it uses less digits than its factorization.

20232564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153295 (or 153293 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 20232564 is about 4498.0622494581. The cubic root of 20232564 is about 272.4898360544.

Adding to 20232564 its reverse (46523202), we get a palindrome (66755766).

The spelling of 20232564 in words is "twenty million, two hundred thirty-two thousand, five hundred sixty-four".