23305940 has 24 divisors (see below), whose sum is σ = 55934592. Its totient is φ = 7990560.

The previous prime is 23305939. The next prime is 23305943. The reversal of 23305940 is 4950332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23305943) 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, 83096 + ... + 83375.

It is an arithmetic number, because the mean of its divisors is an integer number (2330608).

Almost surely, 2^23305940 is an apocalyptic number.

23305940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23305940 is an abundant number, since it is smaller than the sum of its proper divisors (32628652).

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

23305940 is a wasteful number, since it uses less digits than its factorization.

23305940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166487 (or 166485 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 23305940 is about 4827.6226033111. The cubic root of 23305940 is about 285.6420939036.

The spelling of 23305940 in words is "twenty-three million, three hundred five thousand, nine hundred forty".