23491853 has 16 divisors (see below), whose sum is σ = 29790720. Its totient is φ = 17991600.

The previous prime is 23491829. The next prime is 23491859. The reversal of 23491853 is 35819432.

It is not a de Polignac number, because 23491853 - 2²⁴ = 6714637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23491859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1958 + ... + 7128.

It is an arithmetic number, because the mean of its divisors is an integer number (1861920).

Almost surely, 2^23491853 is an apocalyptic number.

It is an amenable number.

23491853 is a deficient number, since it is larger than the sum of its proper divisors (6298867).

23491853 is a wasteful number, since it uses less digits than its factorization.

23491853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5248.

The product of its digits is 25920, while the sum is 35.

The square root of 23491853 is about 4846.8394856855. The cubic root of 23491853 is about 286.3996117274.

The spelling of 23491853 in words is "twenty-three million, four hundred ninety-one thousand, eight hundred fifty-three".