23313940 has 24 divisors (see below), whose sum is σ = 52725960. Its totient is φ = 8608128.

The previous prime is 23313929. The next prime is 23313943. The reversal of 23313940 is 4931332.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 4356 + 23309584 = 66^2 + 4828^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23313943) by changing a digit.

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, 44575 + ... + 45094.

It is an arithmetic number, because the mean of its divisors is an integer number (2196915).

Almost surely, 2^23313940 is an apocalyptic number.

23313940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23313940 is an abundant number, since it is smaller than the sum of its proper divisors (29412020).

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

23313940 is a wasteful number, since it uses less digits than its factorization.

23313940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89691 (or 89689 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 23313940 is about 4828.4510974017. The cubic root of 23313940 is about 285.6747733455.

The spelling of 23313940 in words is "twenty-three million, three hundred thirteen thousand, nine hundred forty".