23099090 has 96 divisors (see below), whose sum is σ = 53187840. Its totient is φ = 7171584.

The previous prime is 23099081. The next prime is 23099101. The reversal of 23099090 is 9099032.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 391481 + ... + 391539.

It is an arithmetic number, because the mean of its divisors is an integer number (554040).

Almost surely, 2^23099090 is an apocalyptic number.

23099090 is an abundant number, since it is smaller than the sum of its proper divisors (30088750).

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

23099090 is a wasteful number, since it uses less digits than its factorization.

23099090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 23099090 is about 4806.1512668662. The cubic root of 23099090 is about 284.7945169088.

The spelling of 23099090 in words is "twenty-three million, ninety-nine thousand, ninety".