22289647 has 4 divisors (see below), whose sum is σ = 22326976. Its totient is φ = 22252320.

The previous prime is 22289639. The next prime is 22289653. The reversal of 22289647 is 74698222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74698222 = 2 ⋅37349111.

It is a cyclic number.

It is not a de Polignac number, because 22289647 - 2³ = 22289639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22283647) 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, 17754 + ... + 18967.

It is an arithmetic number, because the mean of its divisors is an integer number (5581744).

Almost surely, 2^22289647 is an apocalyptic number.

22289647 is a deficient number, since it is larger than the sum of its proper divisors (37329).

22289647 is an equidigital number, since it uses as much as digits as its factorization.

22289647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37328.

The product of its digits is 96768, while the sum is 40.

The square root of 22289647 is about 4721.1912691608. The cubic root of 22289647 is about 281.4282759764.

The spelling of 22289647 in words is "twenty-two million, two hundred eighty-nine thousand, six hundred forty-seven".