23857998 has 16 divisors (see below), whose sum is σ = 47784576. Its totient is φ = 7941240.

The previous prime is 23857997. The next prime is 23858033. The reversal of 23857998 is 89975832.

It is a self number, because there is not a number n which added to its sum of digits gives 23857998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23857997) 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, 2415 + ... + 7317.

It is an arithmetic number, because the mean of its divisors is an integer number (2986536).

Almost surely, 2^23857998 is an apocalyptic number.

23857998 is an abundant number, since it is smaller than the sum of its proper divisors (23926578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23857998 is a wasteful number, since it uses less digits than its factorization.

23857998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5719.

The product of its digits is 1088640, while the sum is 51.

The square root of 23857998 is about 4884.4649655822. The cubic root of 23857998 is about 287.8798930119.

The spelling of 23857998 in words is "twenty-three million, eight hundred fifty-seven thousand, nine hundred ninety-eight".