22198628 has 6 divisors (see below), whose sum is σ = 38847606. Its totient is φ = 11099312.

The previous prime is 22198607. The next prime is 22198637. The reversal of 22198628 is 82689122.

It can be written as a sum of positive squares in only one way, i.e., 18731584 + 3467044 = 4328^2 + 1862^2 .

It is a junction number, because it is equal to n+sod(n) for n = 22198591 and 22198600.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2774825 + ... + 2774832.

It is an arithmetic number, because the mean of its divisors is an integer number (6474601).

Almost surely, 2^22198628 is an apocalyptic number.

It is an amenable number.

22198628 is a deficient number, since it is larger than the sum of its proper divisors (16648978).

22198628 is a wasteful number, since it uses less digits than its factorization.

22198628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5549661 (or 5549659 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 22198628 is about 4711.5419981148. The cubic root of 22198628 is about 281.0446858432.

The spelling of 22198628 in words is "twenty-two million, one hundred ninety-eight thousand, six hundred twenty-eight".