22447791 has 12 divisors (see below), whose sum is σ = 32515080. Its totient is φ = 14923440.

The previous prime is 22447783. The next prime is 22447807. The reversal of 22447791 is 19774422.

It is not a de Polignac number, because 22447791 - 2³ = 22447783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22447741) 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, 121 + ... + 6701.

It is an arithmetic number, because the mean of its divisors is an integer number (2709590).

Almost surely, 2^22447791 is an apocalyptic number.

22447791 is a deficient number, since it is larger than the sum of its proper divisors (10067289).

22447791 is a wasteful number, since it uses less digits than its factorization.

22447791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6966 (or 6963 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 22447791 is about 4737.9099822601. The cubic root of 22447791 is about 282.0922815535.

The spelling of 22447791 in words is "twenty-two million, four hundred forty-seven thousand, seven hundred ninety-one".