22412287 has 4 divisors (see below), whose sum is σ = 23135296. Its totient is φ = 21689280.

The previous prime is 22412233. The next prime is 22412297. The reversal of 22412287 is 78221422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78221422 = 2 ⋅39110711.

It is a cyclic number.

It is not a de Polignac number, because 22412287 - 2¹¹ = 22410239 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 (22412297) 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, 361458 + ... + 361519.

It is an arithmetic number, because the mean of its divisors is an integer number (5783824).

Almost surely, 2^22412287 is an apocalyptic number.

22412287 is a deficient number, since it is larger than the sum of its proper divisors (723009).

22412287 is an equidigital number, since it uses as much as digits as its factorization.

22412287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723008.

The product of its digits is 3584, while the sum is 28.

The square root of 22412287 is about 4734.1616998155. The cubic root of 22412287 is about 281.9434816231.

The spelling of 22412287 in words is "twenty-two million, four hundred twelve thousand, two hundred eighty-seven".