23687090 has 24 divisors (see below), whose sum is σ = 49598892. Its totient is φ = 8121120.

The previous prime is 23687089. The next prime is 23687119. The reversal of 23687090 is 9078632.

It can be written as a sum of positive squares in 2 ways, for example, as 23396569 + 290521 = 4837^2 + 539^2 .

It is a super-2 number, since 2×23687090² = 1122156465336200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 23687090.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23681 + ... + 24660.

Almost surely, 2^23687090 is an apocalyptic number.

23687090 is an abundant number, since it is smaller than the sum of its proper divisors (25911802).

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

23687090 is a wasteful number, since it uses less digits than its factorization.

23687090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48362 (or 48355 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 23687090 is about 4866.9384627299. The cubic root of 23687090 is about 287.1908308487.

The spelling of 23687090 in words is "twenty-three million, six hundred eighty-seven thousand, ninety".