118427978 has 8 divisors (see below), whose sum is σ = 177697380. Its totient is φ = 59195520.

The previous prime is 118427971. The next prime is 118427987. The reversal of 118427978 is 879724811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 108014449 + 10413529 = 10393^2 + 3227^2 .

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

It is not an unprimeable number, because it can be changed into a prime (118427971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1088 + ... + 15428.

Almost surely, 2^118427978 is an apocalyptic number.

118427978 is a deficient number, since it is larger than the sum of its proper divisors (59269402).

118427978 is a wasteful number, since it uses less digits than its factorization.

118427978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18472.

The product of its digits is 225792, while the sum is 47.

The square root of 118427978 is about 10882.4619457180. The cubic root of 118427978 is about 491.0790851577.

The spelling of 118427978 in words is "one hundred eighteen million, four hundred twenty-seven thousand, nine hundred seventy-eight".