22019228 has 48 divisors (see below), whose sum is σ = 49056000. Its totient is φ = 8573040.

The previous prime is 22019219. The next prime is 22019251. The reversal of 22019228 is 82291022.

It is a junction number, because it is equal to n+sod(n) for n = 22019197 and 22019206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14363 + ... + 15821.

It is an arithmetic number, because the mean of its divisors is an integer number (1022000).

Almost surely, 2^22019228 is an apocalyptic number.

22019228 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 22019228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24528000).

22019228 is an abundant number, since it is smaller than the sum of its proper divisors (27036772).

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

22019228 is a wasteful number, since it uses less digits than its factorization.

22019228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1479 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 22019228 is about 4692.4650238441. The cubic root of 22019228 is about 280.2855420406.

The spelling of 22019228 in words is "twenty-two million, nineteen thousand, two hundred twenty-eight".