22172286 has 8 divisors (see below), whose sum is σ = 44344584. Its totient is φ = 7390760.

The previous prime is 22172279. The next prime is 22172291. The reversal of 22172286 is 68227122.

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

22172286 is an admirable number.

It is a super-2 number, since 2×22172286² = 983220532931592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1847685 + ... + 1847696.

It is an arithmetic number, because the mean of its divisors is an integer number (5543073).

Almost surely, 2^22172286 is an apocalyptic number.

22172286 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22172286 is a wasteful number, since it uses less digits than its factorization.

22172286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3695386.

The product of its digits is 5376, while the sum is 30.

The square root of 22172286 is about 4708.7456928571. The cubic root of 22172286 is about 280.9334746246.

The spelling of 22172286 in words is "twenty-two million, one hundred seventy-two thousand, two hundred eighty-six".