23983491 has 48 divisors (see below), whose sum is σ = 40565760. Its totient is φ = 12519360.

The previous prime is 23983471. The next prime is 23983513. The reversal of 23983491 is 19438932.

It is not a de Polignac number, because 23983491 - 2¹¹ = 23981443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23983451) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 86445 + ... + 86721.

It is an arithmetic number, because the mean of its divisors is an integer number (845120).

Almost surely, 2^23983491 is an apocalyptic number.

23983491 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23983491 is a deficient number, since it is larger than the sum of its proper divisors (16582269).

23983491 is a wasteful number, since it uses less digits than its factorization.

23983491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344 (or 337 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 23983491 is about 4897.2942529523. The cubic root of 23983491 is about 288.3837597290.

The spelling of 23983491 in words is "twenty-three million, nine hundred eighty-three thousand, four hundred ninety-one".