23492991 has 8 divisors (see below), whose sum is σ = 31837744. Its totient is φ = 15405120.

The previous prime is 23492971. The next prime is 23493011. The reversal of 23492991 is 19929432.

It is an interprime number because it is at equal distance from previous prime (23492971) and next prime (23493011).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 23492991 - 2⁶ = 23492927 is a prime.

It is a super-2 number, since 2×23492991² = 1103841252252162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23492971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64006 + ... + 64371.

It is an arithmetic number, because the mean of its divisors is an integer number (3979718).

Almost surely, 2^23492991 is an apocalyptic number.

23492991 is a deficient number, since it is larger than the sum of its proper divisors (8344753).

23492991 is a wasteful number, since it uses less digits than its factorization.

23492991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128441.

The product of its digits is 34992, while the sum is 39.

The square root of 23492991 is about 4846.9568803529. The cubic root of 23492991 is about 286.4042362739.

The spelling of 23492991 in words is "twenty-three million, four hundred ninety-two thousand, nine hundred ninety-one".