22991347 has 8 divisors (see below), whose sum is σ = 23508144. Its totient is φ = 22477728.

The previous prime is 22991333. The next prime is 22991357. The reversal of 22991347 is 74319922.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22991347 - 2⁷ = 22991219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22991317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19188 + ... + 20350.

It is an arithmetic number, because the mean of its divisors is an integer number (2938518).

Almost surely, 2^22991347 is an apocalyptic number.

22991347 is a deficient number, since it is larger than the sum of its proper divisors (516797).

22991347 is a wasteful number, since it uses less digits than its factorization.

22991347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589.

The product of its digits is 27216, while the sum is 37.

The square root of 22991347 is about 4794.9293008344. The cubic root of 22991347 is about 284.3510297712.

The spelling of 22991347 in words is "twenty-two million, nine hundred ninety-one thousand, three hundred forty-seven".