23720885 has 8 divisors (see below), whose sum is σ = 29234616. Its totient is φ = 18463680.

The previous prime is 23720861. The next prime is 23720909. The reversal of 23720885 is 58802732.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23720861) and next prime (23720909).

It can be written as a sum of positive squares in 4 ways, for example, as 6340324 + 17380561 = 2518^2 + 4169^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23720885 - 2⁸ = 23720629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63926 + ... + 64295.

It is an arithmetic number, because the mean of its divisors is an integer number (3654327).

Almost surely, 2^23720885 is an apocalyptic number.

It is an amenable number.

23720885 is a deficient number, since it is larger than the sum of its proper divisors (5513731).

23720885 is a wasteful number, since it uses less digits than its factorization.

23720885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128263.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 23720885 is about 4870.4091203922. The cubic root of 23720885 is about 287.3273468725.

The spelling of 23720885 in words is "twenty-three million, seven hundred twenty thousand, eight hundred eighty-five".