23115490 has 8 divisors (see below), whose sum is σ = 41607900. Its totient is φ = 9246192.

The previous prime is 23115451. The next prime is 23115497. The reversal of 23115490 is 9451132.

It can be written as a sum of positive squares in 2 ways, for example, as 21520321 + 1595169 = 4639^2 + 1263^2 .

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

It is not an unprimeable number, because it can be changed into a prime (23115497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1155765 + ... + 1155784.

Almost surely, 2^23115490 is an apocalyptic number.

23115490 is a deficient number, since it is larger than the sum of its proper divisors (18492410).

23115490 is a wasteful number, since it uses less digits than its factorization.

23115490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311556.

The product of its (nonzero) digits is 1080, while the sum is 25.

The square root of 23115490 is about 4807.8571110215. The cubic root of 23115490 is about 284.8619008787.

The spelling of 23115490 in words is "twenty-three million, one hundred fifteen thousand, four hundred ninety".