22198830 has 32 divisors (see below), whose sum is σ = 53404704. Its totient is φ = 5905536.

The previous prime is 22198819. The next prime is 22198837. The reversal of 22198830 is 3889122.

It is a junction number, because it is equal to n+sod(n) for n = 22198791 and 22198800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22198837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19764 + ... + 20856.

It is an arithmetic number, because the mean of its divisors is an integer number (1668897).

Almost surely, 2^22198830 is an apocalyptic number.

22198830 is an abundant number, since it is smaller than the sum of its proper divisors (31205874).

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

22198830 is a wasteful number, since it uses less digits than its factorization.

22198830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1780.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 22198830 is about 4711.5634347847. The cubic root of 22198830 is about 281.0455383111.

The spelling of 22198830 in words is "twenty-two million, one hundred ninety-eight thousand, eight hundred thirty".