22991424 has 28 divisors (see below), whose sum is σ = 60831984. Its totient is φ = 7663744.

The previous prime is 22991407. The next prime is 22991431. The reversal of 22991424 is 42419922.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59682 + ... + 60065.

Almost surely, 2^22991424 is an apocalyptic number.

22991424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22991424 is an abundant number, since it is smaller than the sum of its proper divisors (37840560).

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

22991424 is a wasteful number, since it uses less digits than its factorization.

22991424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119762 (or 119752 counting only the distinct ones).

The product of its digits is 10368, while the sum is 33.

The square root of 22991424 is about 4794.9373301431. The cubic root of 22991424 is about 284.3513472096.

The spelling of 22991424 in words is "twenty-two million, nine hundred ninety-one thousand, four hundred twenty-four".