23297720 has 32 divisors (see below), whose sum is σ = 52660800. Its totient is φ = 9276288.

The previous prime is 23297713. The next prime is 23297723. The reversal of 23297720 is 2779232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23297723) 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, 8342 + ... + 10778.

It is an arithmetic number, because the mean of its divisors is an integer number (1645650).

Almost surely, 2^23297720 is an apocalyptic number.

23297720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23297720 is an abundant number, since it is smaller than the sum of its proper divisors (29363080).

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

23297720 is a wasteful number, since it uses less digits than its factorization.

23297720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687 (or 2683 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 23297720 is about 4826.7711775057. The cubic root of 23297720 is about 285.6085079864.

The spelling of 23297720 in words is "twenty-three million, two hundred ninety-seven thousand, seven hundred twenty".