23664620 has 48 divisors (see below), whose sum is σ = 58130688. Its totient is φ = 7922880.

The previous prime is 23664607. The next prime is 23664623. The reversal of 23664620 is 2646632.

It is not an unprimeable number, because it can be changed into a prime (23664623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4055 + ... + 7985.

It is an arithmetic number, because the mean of its divisors is an integer number (1211056).

Almost surely, 2^23664620 is an apocalyptic number.

23664620 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 23664620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29065344).

23664620 is an abundant number, since it is smaller than the sum of its proper divisors (34466068).

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

23664620 is a wasteful number, since it uses less digits than its factorization.

23664620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990 (or 3988 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 23664620 is about 4864.6294822936. The cubic root of 23664620 is about 287.0999906543.

The spelling of 23664620 in words is "twenty-three million, six hundred sixty-four thousand, six hundred twenty".