22082391 has 12 divisors (see below), whose sum is σ = 32110000. Its totient is φ = 14623200.

The previous prime is 22082383. The next prime is 22082393. The reversal of 22082391 is 19328022.

It is a happy number.

It is not a de Polignac number, because 22082391 - 2³ = 22082383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22082393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6766 + ... + 9483.

Almost surely, 2^22082391 is an apocalyptic number.

22082391 is a deficient number, since it is larger than the sum of its proper divisors (10027609).

22082391 is a wasteful number, since it uses less digits than its factorization.

22082391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16406 (or 16403 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 22082391 is about 4699.1904621967. The cubic root of 22082391 is about 280.5532894646.

The spelling of 22082391 in words is "twenty-two million, eighty-two thousand, three hundred ninety-one".