23457839 has 8 divisors (see below), whose sum is σ = 24630960. Its totient is φ = 22309056.

The previous prime is 23457829. The next prime is 23457857. The reversal of 23457839 is 93875432.

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

It is a cyclic number.

It is not a de Polignac number, because 23457839 - 2⁴ = 23457823 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23457796 and 23457805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23457809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4094 + ... + 7979.

It is an arithmetic number, because the mean of its divisors is an integer number (3078870).

Almost surely, 2^23457839 is an apocalyptic number.

23457839 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

23457839 is a deficient number, since it is larger than the sum of its proper divisors (1173121).

23457839 is a wasteful number, since it uses less digits than its factorization.

23457839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12169.

The product of its digits is 181440, while the sum is 41.

The square root of 23457839 is about 4843.3293301199. The cubic root of 23457839 is about 286.2613183679.

The spelling of 23457839 in words is "twenty-three million, four hundred fifty-seven thousand, eight hundred thirty-nine".