23402690 has 8 divisors (see below), whose sum is σ = 42124860. Its totient is φ = 9361072.

The previous prime is 23402689. The next prime is 23402713. The reversal of 23402690 is 9620432.

23402690 = 1391² + 1392² + ... + 1402².

It can be written as a sum of positive squares in 2 ways, for example, as 20079361 + 3323329 = 4481^2 + 1823^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×23402690² = 1095371798472200, which contains 22 as substring.

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1170125 + ... + 1170144.

Almost surely, 2^23402690 is an apocalyptic number.

23402690 is a deficient number, since it is larger than the sum of its proper divisors (18722170).

23402690 is a wasteful number, since it uses less digits than its factorization.

23402690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2340276.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 23402690 is about 4837.6326855188. The cubic root of 23402690 is about 286.0368104282.

The spelling of 23402690 in words is "twenty-three million, four hundred two thousand, six hundred ninety".