22198730 has 16 divisors (see below), whose sum is σ = 40055904. Its totient is φ = 8857680.

The previous prime is 22198727. The next prime is 22198733. The reversal of 22198730 is 3789122.

It is an interprime number because it is at equal distance from previous prime (22198727) and next prime (22198733).

It is a super-2 number, since 2×22198730² = 985567227225800, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22198733) 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 7 ways as a sum of consecutive naturals, for example, 1925 + ... + 6935.

It is an arithmetic number, because the mean of its divisors is an integer number (2503494).

Almost surely, 2^22198730 is an apocalyptic number.

22198730 is a deficient number, since it is larger than the sum of its proper divisors (17857174).

22198730 is a wasteful number, since it uses less digits than its factorization.

22198730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5461.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 22198730 is about 4711.5528225841. The cubic root of 22198730 is about 281.0451162979.

The spelling of 22198730 in words is "twenty-two million, one hundred ninety-eight thousand, seven hundred thirty".