22913691 has 8 divisors (see below), whose sum is σ = 30575424. Its totient is φ = 15263880.

The previous prime is 22913687. The next prime is 22913699. The reversal of 22913691 is 19631922.

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

It is not a de Polignac number, because 22913691 - 2² = 22913687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22913699) 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, 3556 + ... + 7646.

It is an arithmetic number, because the mean of its divisors is an integer number (3821928).

Almost surely, 2^22913691 is an apocalyptic number.

22913691 is a deficient number, since it is larger than the sum of its proper divisors (7661733).

22913691 is a wasteful number, since it uses less digits than its factorization.

22913691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5961.

The product of its digits is 5832, while the sum is 33.

The square root of 22913691 is about 4786.8247304450. The cubic root of 22913691 is about 284.0305255491.

The spelling of 22913691 in words is "twenty-two million, nine hundred thirteen thousand, six hundred ninety-one".