23887620 has 36 divisors (see below), whose sum is σ = 72459660. Its totient is φ = 6369984.

The previous prime is 23887613. The next prime is 23887621. The reversal of 23887620 is 2678832.

It is a happy number.

23887620 is a `hidden beast` number, since 23 + 8 + 8 + 7 + 620 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13660416 + 10227204 = 3696^2 + 3198^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (23887621) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 66175 + ... + 66534.

Almost surely, 2^23887620 is an apocalyptic number.

23887620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23887620 is an abundant number, since it is smaller than the sum of its proper divisors (48572040).

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

23887620 is a wasteful number, since it uses less digits than its factorization.

23887620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132724 (or 132719 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 23887620 is about 4887.4962915587. The cubic root of 23887620 is about 287.9989872650.

The spelling of 23887620 in words is "twenty-three million, eight hundred eighty-seven thousand, six hundred twenty".