22889647 has 4 divisors (see below), whose sum is σ = 24970536. Its totient is φ = 20808760.

The previous prime is 22889641. The next prime is 22889651. The reversal of 22889647 is 74698822.

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

It is a cyclic number.

It is not a de Polignac number, because 22889647 - 2³ = 22889639 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22889597 and 22889606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22889641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1040428 + ... + 1040449.

It is an arithmetic number, because the mean of its divisors is an integer number (6242634).

Almost surely, 2^22889647 is an apocalyptic number.

22889647 is a deficient number, since it is larger than the sum of its proper divisors (2080889).

22889647 is a wasteful number, since it uses less digits than its factorization.

22889647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080888.

The product of its digits is 387072, while the sum is 46.

The square root of 22889647 is about 4784.3125943023. The cubic root of 22889647 is about 283.9311436257.

It can be divided in two parts, 2288 and 9647, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 22889647 in words is "twenty-two million, eight hundred eighty-nine thousand, six hundred forty-seven".