23018790 has 16 divisors (see below), whose sum is σ = 55245168. Its totient is φ = 6138336.

The previous prime is 23018759. The next prime is 23018797. The reversal of 23018790 is 9781032.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 767293 = 23018790 / (2 + 3 + 0 + 1 + 8 + 7 + 9 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23018797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 383617 + ... + 383676.

It is an arithmetic number, because the mean of its divisors is an integer number (3452823).

Almost surely, 2^23018790 is an apocalyptic number.

23018790 is an abundant number, since it is smaller than the sum of its proper divisors (32226378).

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

23018790 is a wasteful number, since it uses less digits than its factorization.

23018790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767303.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 23018790 is about 4797.7901162931. The cubic root of 23018790 is about 284.4641207612.

The spelling of 23018790 in words is "twenty-three million, eighteen thousand, seven hundred ninety".