115638330 has 32 divisors (see below), whose sum is σ = 283440384. Its totient is φ = 30180416.

The previous prime is 115638317. The next prime is 115638337. The reversal of 115638330 is 33836511.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (115638337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39597 + ... + 42416.

It is an arithmetic number, because the mean of its divisors is an integer number (8857512).

Almost surely, 2^115638330 is an apocalyptic number.

115638330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

115638330 is an abundant number, since it is smaller than the sum of its proper divisors (167802054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

115638330 is a wasteful number, since it uses less digits than its factorization.

115638330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82070.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 115638330 is about 10753.5263983495. The cubic root of 115638330 is about 487.1925108925.

The spelling of 115638330 in words is "one hundred fifteen million, six hundred thirty-eight thousand, three hundred thirty".