22804427 has 4 divisors (see below), whose sum is σ = 24004680. Its totient is φ = 21604176.

The previous prime is 22804403. The next prime is 22804433. The reversal of 22804427 is 72440822.

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-22804427 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 22804427.

It is not an unprimeable number, because it can be changed into a prime (22804627) 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, 600098 + ... + 600135.

It is an arithmetic number, because the mean of its divisors is an integer number (6001170).

Almost surely, 2^22804427 is an apocalyptic number.

22804427 is a deficient number, since it is larger than the sum of its proper divisors (1200253).

22804427 is a wasteful number, since it uses less digits than its factorization.

22804427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200252.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 22804427 is about 4775.3980985882. The cubic root of 22804427 is about 283.5783392484.

The spelling of 22804427 in words is "twenty-two million, eight hundred four thousand, four hundred twenty-seven".