22247286 has 16 divisors (see below), whose sum is σ = 45697584. Its totient is φ = 7215264.

The previous prime is 22247273. The next prime is 22247287. The reversal of 22247286 is 68274222.

It is a super-3 number, since 3×22247286³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22247287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49885 + ... + 50328.

It is an arithmetic number, because the mean of its divisors is an integer number (2856099).

Almost surely, 2^22247286 is an apocalyptic number.

22247286 is an abundant number, since it is smaller than the sum of its proper divisors (23450298).

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

22247286 is a wasteful number, since it uses less digits than its factorization.

22247286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100255.

The product of its digits is 21504, while the sum is 33.

The square root of 22247286 is about 4716.7028738304. The cubic root of 22247286 is about 281.2498800987.

The spelling of 22247286 in words is "twenty-two million, two hundred forty-seven thousand, two hundred eighty-six".