118228515 has 8 divisors (see below), whose sum is σ = 189165648. Its totient is φ = 63055200.

The previous prime is 118228511. The next prime is 118228541. The reversal of 118228515 is 515822811.

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

It is not a de Polignac number, because 118228515 - 2² = 118228511 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118228511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3940936 + ... + 3940965.

It is an arithmetic number, because the mean of its divisors is an integer number (23645706).

Almost surely, 2^118228515 is an apocalyptic number.

118228515 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

118228515 is a deficient number, since it is larger than the sum of its proper divisors (70937133).

118228515 is an equidigital number, since it uses as much as digits as its factorization.

118228515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7881909.

The product of its digits is 6400, while the sum is 33.

The square root of 118228515 is about 10873.2936592368. The cubic root of 118228515 is about 490.8032293088.

The spelling of 118228515 in words is "one hundred eighteen million, two hundred twenty-eight thousand, five hundred fifteen".