22272285 has 16 divisors (see below), whose sum is σ = 40726656. Its totient is φ = 10181568.

The previous prime is 22272281. The next prime is 22272287. The reversal of 22272285 is 58227222.

It is not a de Polignac number, because 22272285 - 2² = 22272281 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22272281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105954 + ... + 106163.

It is an arithmetic number, because the mean of its divisors is an integer number (2545416).

Almost surely, 2^22272285 is an apocalyptic number.

It is an amenable number.

22272285 is a deficient number, since it is larger than the sum of its proper divisors (18454371).

22272285 is a wasteful number, since it uses less digits than its factorization.

22272285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212132.

The product of its digits is 8960, while the sum is 30.

The square root of 22272285 is about 4719.3521801196. The cubic root of 22272285 is about 281.3551863349.

The spelling of 22272285 in words is "twenty-two million, two hundred seventy-two thousand, two hundred eighty-five".