22647398 has 4 divisors (see below), whose sum is σ = 33971100. Its totient is φ = 11323698.

The previous prime is 22647397. The next prime is 22647437. The reversal of 22647398 is 89374622.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89374622 = 2 ⋅44687311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22647397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5661848 + ... + 5661851.

It is an arithmetic number, because the mean of its divisors is an integer number (8492775).

Almost surely, 2^22647398 is an apocalyptic number.

22647398 is a deficient number, since it is larger than the sum of its proper divisors (11323702).

22647398 is a wasteful number, since it uses less digits than its factorization.

22647398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11323701.

The product of its digits is 145152, while the sum is 41.

The square root of 22647398 is about 4758.9282406861. The cubic root of 22647398 is about 282.9259421561.

The spelling of 22647398 in words is "twenty-two million, six hundred forty-seven thousand, three hundred ninety-eight".