22831998 has 32 divisors (see below), whose sum is σ = 53464320. Its totient is φ = 6363840.

The previous prime is 22831993. The next prime is 22832023. The reversal of 22831998 is 89913822.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22831993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4908 + ... + 8351.

It is an arithmetic number, because the mean of its divisors is an integer number (1670760).

Almost surely, 2^22831998 is an apocalyptic number.

22831998 is an abundant number, since it is smaller than the sum of its proper divisors (30632322).

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

22831998 is a wasteful number, since it uses less digits than its factorization.

22831998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13312.

The product of its digits is 62208, while the sum is 42.

The square root of 22831998 is about 4778.2840016056. The cubic root of 22831998 is about 283.6925771488.

The spelling of 22831998 in words is "twenty-two million, eight hundred thirty-one thousand, nine hundred ninety-eight".