118289278 has 8 divisors (see below), whose sum is σ = 178710840. Its totient is φ = 58719000.

The previous prime is 118289261. The next prime is 118289279. The reversal of 118289278 is 872982811.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×118289278² = 27984706579522568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118289279) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 212473 + ... + 213028.

It is an arithmetic number, because the mean of its divisors is an integer number (22338855).

Almost surely, 2^118289278 is an apocalyptic number.

118289278 is a deficient number, since it is larger than the sum of its proper divisors (60421562).

118289278 is a wasteful number, since it uses less digits than its factorization.

118289278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425642.

The product of its digits is 129024, while the sum is 46.

The square root of 118289278 is about 10876.0874398839. The cubic root of 118289278 is about 490.8872969271.

The spelling of 118289278 in words is "one hundred eighteen million, two hundred eighty-nine thousand, two hundred seventy-eight".