23940720 has 120 divisors (see below), whose sum is σ = 82463472. Its totient is φ = 6220800.

The previous prime is 23940659. The next prime is 23940767. The reversal of 23940720 is 2704932.

23940720 is a `hidden beast` number, since 239 + 407 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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 23 ways as a sum of consecutive naturals, for example, 29115 + ... + 29925.

Almost surely, 2^23940720 is an apocalyptic number.

23940720 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 23940720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41231736).

23940720 is an abundant number, since it is smaller than the sum of its proper divisors (58522752).

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

23940720 is a wasteful number, since it uses less digits than its factorization.

23940720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 23940720 is about 4892.9255052576. The cubic root of 23940720 is about 288.2122278297.

The spelling of 23940720 in words is "twenty-three million, nine hundred forty thousand, seven hundred twenty".