22089591 has 40 divisors (see below), whose sum is σ = 35126784. Its totient is φ = 13804560.

The previous prime is 22089583. The next prime is 22089623. The reversal of 22089591 is 19598022.

It is not a de Polignac number, because 22089591 - 2³ = 22089583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22089091) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 132190 + ... + 132356.

Almost surely, 2^22089591 is an apocalyptic number.

22089591 is a deficient number, since it is larger than the sum of its proper divisors (13037193).

22089591 is a wasteful number, since it uses less digits than its factorization.

22089591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 22089591 is about 4699.9564891603. The cubic root of 22089591 is about 280.5837777721.

The spelling of 22089591 in words is "twenty-two million, eighty-nine thousand, five hundred ninety-one".