22284756 has 72 divisors (see below), whose sum is σ = 64255464. Its totient is φ = 6451200.

The previous prime is 22284749. The next prime is 22284761. The reversal of 22284756 is 65748222.

It can be written as a sum of positive squares in 4 ways, for example, as 2624400 + 19660356 = 1620^2 + 4434^2 .

It is a super-2 number, since 2×22284756² = 993220699959072, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 22284756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6556 + ... + 9356.

It is an arithmetic number, because the mean of its divisors is an integer number (892437).

Almost surely, 2^22284756 is an apocalyptic number.

22284756 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22284756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32127732).

22284756 is an abundant number, since it is smaller than the sum of its proper divisors (41970708).

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

22284756 is a wasteful number, since it uses less digits than its factorization.

22284756 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2841 (or 2836 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 22284756 is about 4720.6732570683. The cubic root of 22284756 is about 281.4076899410.

The spelling of 22284756 in words is "twenty-two million, two hundred eighty-four thousand, seven hundred fifty-six".