22432091 has 16 divisors (see below), whose sum is σ = 25233120. Its totient is φ = 19768320.

The previous prime is 22432087. The next prime is 22432093. The reversal of 22432091 is 19023422.

It is not a de Polignac number, because 22432091 - 2² = 22432087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22432093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63371 + ... + 63723.

It is an arithmetic number, because the mean of its divisors is an integer number (1577070).

Almost surely, 2^22432091 is an apocalyptic number.

22432091 is a deficient number, since it is larger than the sum of its proper divisors (2801029).

22432091 is a wasteful number, since it uses less digits than its factorization.

22432091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 22432091 is about 4736.2528437574. The cubic root of 22432091 is about 282.0265010388.

It can be divided in two parts, 2243 and 2091, that added together give a palindrome (4334).

The spelling of 22432091 in words is "twenty-two million, four hundred thirty-two thousand, ninety-one".