23018990 has 8 divisors (see below), whose sum is σ = 41434200. Its totient is φ = 9207592.

The previous prime is 23018987. The next prime is 23019041. The reversal of 23018990 is 9981032.

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

It is a congruent number.

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, 1150940 + ... + 1150959.

It is an arithmetic number, because the mean of its divisors is an integer number (5179275).

Almost surely, 2^23018990 is an apocalyptic number.

23018990 is a deficient number, since it is larger than the sum of its proper divisors (18415210).

23018990 is a wasteful number, since it uses less digits than its factorization.

23018990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301906.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 23018990 is about 4797.8109591771. The cubic root of 23018990 is about 284.4649446194.

The spelling of 23018990 in words is "twenty-three million, eighteen thousand, nine hundred ninety".