115199280 has 320 divisors, whose sum is σ = 478540800. Its totient is φ = 24883200.

The previous prime is 115199267. The next prime is 115199291. The reversal of 115199280 is 82991511.

It is a super-2 number, since 2×115199280² = 26541748225036800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 287080 + ... + 287480.

It is an arithmetic number, because the mean of its divisors is an integer number (1495440).

Almost surely, 2^115199280 is an apocalyptic number.

115199280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 115199280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (239270400).

115199280 is an abundant number, since it is smaller than the sum of its proper divisors (363341520).

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

115199280 is a wasteful number, since it uses less digits than its factorization.

115199280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449 (or 437 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 36.

The square root of 115199280 is about 10733.0927509269. The cubic root of 115199280 is about 486.5751459434.

The spelling of 115199280 in words is "one hundred fifteen million, one hundred ninety-nine thousand, two hundred eighty".