115651680 has 96 divisors (see below), whose sum is σ = 385759584. Its totient is φ = 29024256.

The previous prime is 115651667. The next prime is 115651709. The reversal of 115651680 is 86156511.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×115651680² = 26750622173644800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074 + ... + 15246.

It is an arithmetic number, because the mean of its divisors is an integer number (4018329).

Almost surely, 2^115651680 is an apocalyptic number.

115651680 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 115651680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (192879792).

115651680 is an abundant number, since it is smaller than the sum of its proper divisors (270107904).

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

115651680 is a wasteful number, since it uses less digits than its factorization.

115651680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14208 (or 14200 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 33.

The square root of 115651680 is about 10754.1471070467. The cubic root of 115651680 is about 487.2112583376.

The spelling of 115651680 in words is "one hundred fifteen million, six hundred fifty-one thousand, six hundred eighty".