23885491 has 16 divisors (see below), whose sum is σ = 28224000. Its totient is φ = 20202504.

The previous prime is 23885479. The next prime is 23885513. The reversal of 23885491 is 19458832.

It is not a de Polignac number, because 23885491 - 2⁷ = 23885363 is a prime.

It is a super-2 number, since 2×23885491² = 1141033360622162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23885401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28050 + ... + 28888.

It is an arithmetic number, because the mean of its divisors is an integer number (1764000).

Almost surely, 2^23885491 is an apocalyptic number.

23885491 is a deficient number, since it is larger than the sum of its proper divisors (4338509).

23885491 is an frugal number, since it uses more digits than its factorization.

23885491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943 (or 929 counting only the distinct ones).

The product of its digits is 69120, while the sum is 40.

The square root of 23885491 is about 4887.2784860288. The cubic root of 23885491 is about 287.9904309771.

The spelling of 23885491 in words is "twenty-three million, eight hundred eighty-five thousand, four hundred ninety-one".