118215297 has 12 divisors (see below), whose sum is σ = 180800100. Its totient is φ = 74174208.

The previous prime is 118215277. The next prime is 118215301. The reversal of 118215297 is 792512811.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42107121 + 76108176 = 6489^2 + 8724^2 .

It is not a de Polignac number, because 118215297 - 2¹² = 118211201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (118215217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386172 + ... + 386477.

It is an arithmetic number, because the mean of its divisors is an integer number (15066675).

Almost surely, 2^118215297 is an apocalyptic number.

118215297 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

118215297 is a deficient number, since it is larger than the sum of its proper divisors (62584803).

118215297 is a wasteful number, since it uses less digits than its factorization.

118215297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 772672 (or 772669 counting only the distinct ones).

The product of its digits is 10080, while the sum is 36.

The square root of 118215297 is about 10872.6858227395. The cubic root of 118215297 is about 490.7849379548.

The spelling of 118215297 in words is "one hundred eighteen million, two hundred fifteen thousand, two hundred ninety-seven".