23688642 has 16 divisors (see below), whose sum is σ = 47797920. Its totient is φ = 7826112.

The previous prime is 23688629. The next prime is 23688671. The reversal of 23688642 is 24688632.

It is a super-2 number, since 2×23688642² = 1122303519608328, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23688642.

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 7 ways as a sum of consecutive naturals, for example, 16792 + ... + 18147.

It is an arithmetic number, because the mean of its divisors is an integer number (2987370).

Almost surely, 2^23688642 is an apocalyptic number.

23688642 is an abundant number, since it is smaller than the sum of its proper divisors (24109278).

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

23688642 is a wasteful number, since it uses less digits than its factorization.

23688642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35057.

The product of its digits is 110592, while the sum is 39.

The square root of 23688642 is about 4867.0979032684. The cubic root of 23688642 is about 287.1971030478.

The spelling of 23688642 in words is "twenty-three million, six hundred eighty-eight thousand, six hundred forty-two".