23690090 has 16 divisors (see below), whose sum is σ = 42706440. Its totient is φ = 9461760.

The previous prime is 23690083. The next prime is 23690137. The reversal of 23690090 is 9009632.

It can be written as a sum of positive squares in 4 ways, for example, as 8300161 + 15389929 = 2881^2 + 3923^2 .

It is a super-2 number, since 2×23690090² = 1122440728416200, which contains 22 as substring.

It is a Curzon number.

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, 7466 + ... + 10154.

Almost surely, 2^23690090 is an apocalyptic number.

23690090 is a deficient number, since it is larger than the sum of its proper divisors (19016350).

23690090 is a wasteful number, since it uses less digits than its factorization.

23690090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3577.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 23690090 is about 4867.2466549375. The cubic root of 23690090 is about 287.2029546979.

The spelling of 23690090 in words is "twenty-three million, six hundred ninety thousand, ninety".