22487365 has 4 divisors (see below), whose sum is σ = 26984844. Its totient is φ = 17989888.

The previous prime is 22487359. The next prime is 22487371. The reversal of 22487365 is 56378422.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (22487359) and next prime (22487371).

It can be written as a sum of positive squares in 2 ways, for example, as 11950849 + 10536516 = 3457^2 + 3246^2 .

It is a cyclic number.

It is not a de Polignac number, because 22487365 - 2⁹ = 22486853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2248732 + ... + 2248741.

It is an arithmetic number, because the mean of its divisors is an integer number (6746211).

Almost surely, 2^22487365 is an apocalyptic number.

It is an amenable number.

22487365 is a deficient number, since it is larger than the sum of its proper divisors (4497479).

22487365 is an equidigital number, since it uses as much as digits as its factorization.

22487365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497478.

The product of its digits is 80640, while the sum is 37.

The square root of 22487365 is about 4742.0844572825. The cubic root of 22487365 is about 282.2579543685.

The spelling of 22487365 in words is "twenty-two million, four hundred eighty-seven thousand, three hundred sixty-five".