22788647 has 8 divisors (see below), whose sum is σ = 26297856. Its totient is φ = 19342872.

The previous prime is 22788637. The next prime is 22788659. The reversal of 22788647 is 74688722.

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 22788647 - 2⁶ = 22788583 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22788598 and 22788607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22788617) 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, 15083 + ... + 16524.

It is an arithmetic number, because the mean of its divisors is an integer number (3287232).

Almost surely, 2^22788647 is an apocalyptic number.

22788647 is a deficient number, since it is larger than the sum of its proper divisors (3509209).

22788647 is a wasteful number, since it uses less digits than its factorization.

22788647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31717.

The product of its digits is 301056, while the sum is 44.

The square root of 22788647 is about 4773.7455943944. The cubic root of 22788647 is about 283.5129148354.

The spelling of 22788647 in words is "twenty-two million, seven hundred eighty-eight thousand, six hundred forty-seven".