23500720 has 40 divisors (see below), whose sum is σ = 57518640. Its totient is φ = 8904960.

The previous prime is 23500709. The next prime is 23500753. The reversal of 23500720 is 2700532.

It is a happy number.

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

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

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, 6211 + ... + 9250.

It is an arithmetic number, because the mean of its divisors is an integer number (1437966).

Almost surely, 2^23500720 is an apocalyptic number.

23500720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23500720 is an abundant number, since it is smaller than the sum of its proper divisors (34017920).

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

23500720 is a wasteful number, since it uses less digits than its factorization.

23500720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15493 (or 15487 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 23500720 is about 4847.7541191773. The cubic root of 23500720 is about 286.4356410395.

The spelling of 23500720 in words is "twenty-three million, five hundred thousand, seven hundred twenty".