118457228 has 12 divisors (see below), whose sum is σ = 214448640. Its totient is φ = 57186192.

The previous prime is 118457221. The next prime is 118457237. The reversal of 118457228 is 822754811.

It is a super-2 number, since 2×118457228² = 28064229730887968, which contains 22 as substring.

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 118457191 and 118457200.

It is not an unprimeable number, because it can be changed into a prime (118457221) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 510476 + ... + 510707.

It is an arithmetic number, because the mean of its divisors is an integer number (17870720).

Almost surely, 2^118457228 is an apocalyptic number.

It is an amenable number.

118457228 is a deficient number, since it is larger than the sum of its proper divisors (95991412).

118457228 is a wasteful number, since it uses less digits than its factorization.

118457228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1021216 (or 1021214 counting only the distinct ones).

The product of its digits is 35840, while the sum is 38.

The square root of 118457228 is about 10883.8057682044. The cubic root of 118457228 is about 491.1195116432.

The spelling of 118457228 in words is "one hundred eighteen million, four hundred fifty-seven thousand, two hundred twenty-eight".