118199428 has 12 divisors (see below), whose sum is σ = 208005840. Its totient is φ = 58769192.

The previous prime is 118199413. The next prime is 118199441. The reversal of 118199428 is 824991811.

It is a happy number.

It is a super-2 number, since 2×118199428² = 27942209559054368, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81826 + ... + 83257.

It is an arithmetic number, because the mean of its divisors is an integer number (17333820).

Almost surely, 2^118199428 is an apocalyptic number.

It is an amenable number.

118199428 is a deficient number, since it is larger than the sum of its proper divisors (89806412).

118199428 is a wasteful number, since it uses less digits than its factorization.

118199428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165266 (or 165264 counting only the distinct ones).

The product of its digits is 41472, while the sum is 43.

The square root of 118199428 is about 10871.9560337595. The cubic root of 118199428 is about 490.7629762885.

The spelling of 118199428 in words is "one hundred eighteen million, one hundred ninety-nine thousand, four hundred twenty-eight".