22185315 has 24 divisors (see below), whose sum is σ = 38815920. Its totient is φ = 11721024.

The previous prime is 22185313. The next prime is 22185337. The reversal of 22185315 is 51358122.

It is a happy number.

It is not a de Polignac number, because 22185315 - 2¹ = 22185313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22185313) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2644 + ... + 7166.

It is an arithmetic number, because the mean of its divisors is an integer number (1617330).

Almost surely, 2^22185315 is an apocalyptic number.

22185315 is a deficient number, since it is larger than the sum of its proper divisors (16630605).

22185315 is a wasteful number, since it uses less digits than its factorization.

22185315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4643 (or 4640 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 22185315 is about 4710.1289791257. The cubic root of 22185315 is about 280.9884917379.

It can be divided in two parts, 22185 and 315, that added together give a square (22500 = 150²).

The spelling of 22185315 in words is "twenty-two million, one hundred eighty-five thousand, three hundred fifteen".