22542287 has 8 divisors (see below), whose sum is σ = 23480352. Its totient is φ = 21621600.

The previous prime is 22542269. The next prime is 22542313. The reversal of 22542287 is 78224522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22542287 - 2¹⁴ = 22525903 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 (22542587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1664 + ... + 6917.

It is an arithmetic number, because the mean of its divisors is an integer number (2935044).

Almost surely, 2^22542287 is an apocalyptic number.

22542287 is a deficient number, since it is larger than the sum of its proper divisors (938065).

22542287 is an equidigital number, since it uses as much as digits as its factorization.

22542287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8689.

The product of its digits is 17920, while the sum is 32.

The square root of 22542287 is about 4747.8718390454. The cubic root of 22542287 is about 282.4875583839.

Subtracting from 22542287 its sum of digits (32), we obtain a triangular number (22542255 = T₆₇₁₄).

The spelling of 22542287 in words is "twenty-two million, five hundred forty-two thousand, two hundred eighty-seven".