23873491 has 4 divisors (see below), whose sum is σ = 25277832. Its totient is φ = 22469152.

The previous prime is 23873489. The next prime is 23873513. The reversal of 23873491 is 19437832.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23873491 - 2¹ = 23873489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23873491.

It is not an unprimeable number, because it can be changed into a prime (23873401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 702145 + ... + 702178.

It is an arithmetic number, because the mean of its divisors is an integer number (6319458).

Almost surely, 2^23873491 is an apocalyptic number.

23873491 is a deficient number, since it is larger than the sum of its proper divisors (1404341).

23873491 is a wasteful number, since it uses less digits than its factorization.

23873491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1404340.

The product of its digits is 36288, while the sum is 37.

The square root of 23873491 is about 4886.0506546699. The cubic root of 23873491 is about 287.9421943848.

The spelling of 23873491 in words is "twenty-three million, eight hundred seventy-three thousand, four hundred ninety-one".