118639228 has 24 divisors (see below), whose sum is σ = 212112432. Its totient is φ = 58041984.

The previous prime is 118639219. The next prime is 118639237. The reversal of 118639228 is 822936811.

It is an interprime number because it is at equal distance from previous prime (118639219) and next prime (118639237).

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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, 130351 + ... + 131257.

It is an arithmetic number, because the mean of its divisors is an integer number (8838018).

Almost surely, 2^118639228 is an apocalyptic number.

It is an amenable number.

118639228 is a deficient number, since it is larger than the sum of its proper divisors (93473204).

118639228 is a wasteful number, since it uses less digits than its factorization.

118639228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1579 counting only the distinct ones).

The product of its digits is 41472, while the sum is 40.

The square root of 118639228 is about 10892.1636050878. The cubic root of 118639228 is about 491.3709048104.

The spelling of 118639228 in words is "one hundred eighteen million, six hundred thirty-nine thousand, two hundred twenty-eight".