1322728198 has 24 divisors (see below), whose sum is σ = 2217849480. Its totient is φ = 591043200.

The previous prime is 1322728177. The next prime is 1322728237. The reversal of 1322728198 is 8918272231.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32043 + ... + 60598.

It is an arithmetic number, because the mean of its divisors is an integer number (92410395).

Almost surely, 2^1322728198 is an apocalyptic number.

1322728198 is a deficient number, since it is larger than the sum of its proper divisors (895121282).

1322728198 is a wasteful number, since it uses less digits than its factorization.

1322728198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92724 (or 92713 counting only the distinct ones).

The product of its digits is 96768, while the sum is 43.

The square root of 1322728198 is about 36369.3304585058. The cubic root of 1322728198 is about 1097.7165297317.

The spelling of 1322728198 in words is "one billion, three hundred twenty-two million, seven hundred twenty-eight thousand, one hundred ninety-eight".