23628555 has 48 divisors (see below), whose sum is σ = 44108064. Its totient is φ = 11658240.

The previous prime is 23628529. The next prime is 23628557. The reversal of 23628555 is 55582632.

It is a happy number.

23628555 is a `hidden beast` number, since 23 + 628 + 5 + 5 + 5 = 666.

It is not a de Polignac number, because 23628555 - 2⁶ = 23628491 is a prime.

It is a super-2 number, since 2×23628555² = 1116617222776050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23628557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 51025 + ... + 51485.

It is an arithmetic number, because the mean of its divisors is an integer number (918918).

Almost surely, 2^23628555 is an apocalyptic number.

23628555 is a deficient number, since it is larger than the sum of its proper divisors (20479509).

23628555 is a wasteful number, since it uses less digits than its factorization.

23628555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 553 counting only the distinct ones).

The product of its digits is 72000, while the sum is 36.

The square root of 23628555 is about 4860.9212089891. The cubic root of 23628555 is about 286.9540692239.

The spelling of 23628555 in words is "twenty-three million, six hundred twenty-eight thousand, five hundred fifty-five".