23809490 has 16 divisors (see below), whose sum is σ = 42918552. Its totient is φ = 9510144.

The previous prime is 23809483. The next prime is 23809501. The reversal of 23809490 is 9490832.

It can be written as a sum of positive squares in 4 ways, for example, as 23687689 + 121801 = 4867^2 + 349^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 23809490.

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, 8552 + ... + 10988.

Almost surely, 2^23809490 is an apocalyptic number.

23809490 is a deficient number, since it is larger than the sum of its proper divisors (19109062).

23809490 is a wasteful number, since it uses less digits than its factorization.

23809490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 23809490 is about 4879.4969002962. The cubic root of 23809490 is about 287.6846551615.

The spelling of 23809490 in words is "twenty-three million, eight hundred nine thousand, four hundred ninety".