22122828 has 96 divisors (see below), whose sum is σ = 70622720. Its totient is φ = 5832000.

The previous prime is 22122827. The next prime is 22122839. The reversal of 22122828 is 82822122.

It is a Harshad number since it is a multiple of its sum of digits (27).

22122828 is a modest number, since divided by 2828 gives 2212 as remainder.

It is not an unprimeable number, because it can be changed into a prime (22122827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8703 + ... + 10953.

Almost surely, 2^22122828 is an apocalyptic number.

22122828 is a gapful number since it is divisible by the number (28) 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 22122828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35311360).

22122828 is an abundant number, since it is smaller than the sum of its proper divisors (48499892).

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

22122828 is a wasteful number, since it uses less digits than its factorization.

22122828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284 (or 2276 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 22122828 is about 4703.4910438949. The cubic root of 22122828 is about 280.7244336072.

It can be divided in two parts, 2 and 2122828, that added together give a triangular number (2122830 = T₂₀₆₀).

The spelling of 22122828 in words is "twenty-two million, one hundred twenty-two thousand, eight hundred twenty-eight".