23712720 has 80 divisors (see below), whose sum is σ = 76066560. Its totient is φ = 6103552.

The previous prime is 23712709. The next prime is 23712743. The reversal of 23712720 is 2721732.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 5257 + ... + 8663.

It is an arithmetic number, because the mean of its divisors is an integer number (950832).

Almost surely, 2^23712720 is an apocalyptic number.

23712720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23712720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38033280).

23712720 is an abundant number, since it is smaller than the sum of its proper divisors (52353840).

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

23712720 is a wasteful number, since it uses less digits than its factorization.

23712720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452 (or 3446 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 23712720 is about 4869.5708229781. The cubic root of 23712720 is about 287.2943759692.

The spelling of 23712720 in words is "twenty-three million, seven hundred twelve thousand, seven hundred twenty".