22988947 has 4 divisors (see below), whose sum is σ = 24341256. Its totient is φ = 21636640.

The previous prime is 22988899. The next prime is 22988957. The reversal of 22988947 is 74988922.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22988947 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 22988947.

It is not an unprimeable number, because it can be changed into a prime (22988957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 676129 + ... + 676162.

It is an arithmetic number, because the mean of its divisors is an integer number (6085314).

Almost surely, 2^22988947 is an apocalyptic number.

22988947 is a deficient number, since it is larger than the sum of its proper divisors (1352309).

22988947 is a wasteful number, since it uses less digits than its factorization.

22988947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352308.

The product of its digits is 580608, while the sum is 49.

The square root of 22988947 is about 4794.6790299247. The cubic root of 22988947 is about 284.3411352340.

The spelling of 22988947 in words is "twenty-two million, nine hundred eighty-eight thousand, nine hundred forty-seven".