22402567 has 4 divisors (see below), whose sum is σ = 24439176. Its totient is φ = 20365960.

The previous prime is 22402561. The next prime is 22402571. The reversal of 22402567 is 76520422.

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 22402567 - 2¹⁹ = 21878279 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 (22402561) 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, 1018288 + ... + 1018309.

It is an arithmetic number, because the mean of its divisors is an integer number (6109794).

Almost surely, 2^22402567 is an apocalyptic number.

22402567 is a deficient number, since it is larger than the sum of its proper divisors (2036609).

22402567 is a wasteful number, since it uses less digits than its factorization.

22402567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036608.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 22402567 is about 4733.1350075822. The cubic root of 22402567 is about 281.9027169760.

Adding to 22402567 its reverse (76520422), we get a palindrome (98922989).

The spelling of 22402567 in words is "twenty-two million, four hundred two thousand, five hundred sixty-seven".