23011998 has 16 divisors (see below), whose sum is σ = 46432656. Its totient is φ = 7602560.

The previous prime is 23011997. The next prime is 23012047. The reversal of 23011998 is 89911032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23011991) 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, 16293 + ... + 17648.

It is an arithmetic number, because the mean of its divisors is an integer number (2902041).

Almost surely, 2^23011998 is an apocalyptic number.

23011998 is an abundant number, since it is smaller than the sum of its proper divisors (23420658).

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

23011998 is a wasteful number, since it uses less digits than its factorization.

23011998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34059.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 23011998 is about 4797.0822381944. The cubic root of 23011998 is about 284.4361397021.

The spelling of 23011998 in words is "twenty-three million, eleven thousand, nine hundred ninety-eight".