22991150 has 96 divisors (see below), whose sum is σ = 54663168. Its totient is φ = 6998400.

The previous prime is 22991141. The next prime is 22991153. The reversal of 22991150 is 5119922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22991153) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140969 + ... + 141131.

It is an arithmetic number, because the mean of its divisors is an integer number (569408).

Almost surely, 2^22991150 is an apocalyptic number.

22991150 is an abundant number, since it is smaller than the sum of its proper divisors (31672018).

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

22991150 is a wasteful number, since it uses less digits than its factorization.

22991150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 22991150 is about 4794.9087582560. The cubic root of 22991150 is about 284.3502176206.

It can be divided in two parts, 2299 and 1150, that multiplied together give a triangular number (2643850 = T₂₂₉₉).

The spelling of 22991150 in words is "twenty-two million, nine hundred ninety-one thousand, one hundred fifty".