22056736 has 48 divisors (see below), whose sum is σ = 48061944. Its totient is φ = 9897984.

The previous prime is 22056673. The next prime is 22056743. The reversal of 22056736 is 63765022.

It can be written as a sum of positive squares in 4 ways, for example, as 21344400 + 712336 = 4620^2 + 844^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22056698 and 22056707.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14676 + ... + 16108.

Almost surely, 2^22056736 is an apocalyptic number.

22056736 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 22056736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24030972).

22056736 is an abundant number, since it is smaller than the sum of its proper divisors (26005208).

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

22056736 is a wasteful number, since it uses less digits than its factorization.

22056736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1485 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 22056736 is about 4696.4599434042. The cubic root of 22056736 is about 280.4445997882. Note that the first 3 decimals are identical.

The spelling of 22056736 in words is "twenty-two million, fifty-six thousand, seven hundred thirty-six".