22563947 has 8 divisors (see below), whose sum is σ = 27304416. Its totient is φ = 18202752.

The previous prime is 22563941. The next prime is 22563967. The reversal of 22563947 is 74936522.

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 22563947 - 2¹² = 22559851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22563947.

It is not an unprimeable number, because it can be changed into a prime (22563941) 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, 94688 + ... + 94925.

It is an arithmetic number, because the mean of its divisors is an integer number (3413052).

Almost surely, 2^22563947 is an apocalyptic number.

22563947 is a deficient number, since it is larger than the sum of its proper divisors (4740469).

22563947 is a wasteful number, since it uses less digits than its factorization.

22563947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189637.

The product of its digits is 90720, while the sum is 38.

The square root of 22563947 is about 4750.1523133474. The cubic root of 22563947 is about 282.5780064948.

The spelling of 22563947 in words is "twenty-two million, five hundred sixty-three thousand, nine hundred forty-seven".