115442280 has 128 divisors (see below), whose sum is σ = 388080000. Its totient is φ = 30523392.

The previous prime is 115442231. The next prime is 115442281. The reversal of 115442280 is 82244511.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (115442281) 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 31 ways as a sum of consecutive naturals, for example, 149736 + ... + 150504.

It is an arithmetic number, because the mean of its divisors is an integer number (3031875).

Almost surely, 2^115442280 is an apocalyptic number.

115442280 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 115442280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194040000).

115442280 is an abundant number, since it is smaller than the sum of its proper divisors (272637720).

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

115442280 is a wasteful number, since it uses less digits than its factorization.

115442280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928 (or 918 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 115442280 is about 10744.4069170895. The cubic root of 115442280 is about 486.9170309544.

Adding to 115442280 its reverse (82244511), we get a palindrome (197686791).

It can be divided in two parts, 11544 and 2280, that added together give a cube (13824 = 24³).

The spelling of 115442280 in words is "one hundred fifteen million, four hundred forty-two thousand, two hundred eighty".