23148990 has 40 divisors (see below), whose sum is σ = 62247240. Its totient is φ = 6172848.

The previous prime is 23148967. The next prime is 23149003. The reversal of 23148990 is 9984132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13480 + ... + 15099.

It is an arithmetic number, because the mean of its divisors is an integer number (1556181).

Almost surely, 2^23148990 is an apocalyptic number.

23148990 is an abundant number, since it is smaller than the sum of its proper divisors (39098250).

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

23148990 is a wasteful number, since it uses less digits than its factorization.

23148990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28598 (or 28589 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 23148990 is about 4811.3397302622. The cubic root of 23148990 is about 284.9994459823. Note that the first 3 decimals are identical.

The spelling of 23148990 in words is "twenty-three million, one hundred forty-eight thousand, nine hundred ninety".