115971480 has 128 divisors (see below), whose sum is σ = 389491200. Its totient is φ = 30692736.

The previous prime is 115971463. The next prime is 115971487. The reversal of 115971480 is 84179511.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (115971487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180039 + ... + 180681.

It is an arithmetic number, because the mean of its divisors is an integer number (3042900).

Almost surely, 2^115971480 is an apocalyptic number.

115971480 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 115971480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194745600).

115971480 is an abundant number, since it is smaller than the sum of its proper divisors (273519720).

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

115971480 is a wasteful number, since it uses less digits than its factorization.

115971480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830 (or 820 counting only the distinct ones).

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

The square root of 115971480 is about 10769.0055251170. The cubic root of 115971480 is about 487.6599238628.

The spelling of 115971480 in words is "one hundred fifteen million, nine hundred seventy-one thousand, four hundred eighty".