20324560 has 40 divisors (see below), whose sum is σ = 47496960. Its totient is φ = 8088192.

The previous prime is 20324527. The next prime is 20324573. The reversal of 20324560 is 6542302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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, 18589 + ... + 19651.

It is an arithmetic number, because the mean of its divisors is an integer number (1187424).

Almost surely, 2^20324560 is an apocalyptic number.

20324560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20324560 is an abundant number, since it is smaller than the sum of its proper divisors (27172400).

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

20324560 is a wasteful number, since it uses less digits than its factorization.

20324560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315 (or 1309 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 20324560 is about 4508.2768326712. The cubic root of 20324560 is about 272.9022088438.

Adding to 20324560 its reverse (6542302), we get a palindrome (26866862).

The spelling of 20324560 in words is "twenty million, three hundred twenty-four thousand, five hundred sixty".