20313960 has 32 divisors (see below), whose sum is σ = 60942240. Its totient is φ = 5417024.

The previous prime is 20313941. The next prime is 20313961. The reversal of 20313960 is 6931302.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20313960.

It is not an unprimeable number, because it can be changed into a prime (20313961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84522 + ... + 84761.

It is an arithmetic number, because the mean of its divisors is an integer number (1904445).

Almost surely, 2^20313960 is an apocalyptic number.

20313960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20313960 is an abundant number, since it is smaller than the sum of its proper divisors (40628280).

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

20313960 is a wasteful number, since it uses less digits than its factorization.

20313960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169297 (or 169293 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 20313960 is about 4507.1010638769. The cubic root of 20313960 is about 272.8547577722.

The spelling of 20313960 in words is "twenty million, three hundred thirteen thousand, nine hundred sixty".