115641680 has 80 divisors (see below), whose sum is σ = 335228544. Its totient is φ = 36042240.

The previous prime is 115641671. The next prime is 115641703. The reversal of 115641680 is 86146511.

It is a tau number, because it is divible by the number of its divisors (80).

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, 3227 + ... + 15546.

Almost surely, 2^115641680 is an apocalyptic number.

115641680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

115641680 is an abundant number, since it is smaller than the sum of its proper divisors (219586864).

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

115641680 is a wasteful number, since it uses less digits than its factorization.

115641680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18804 (or 18798 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 115641680 is about 10753.6821600789. The cubic root of 115641680 is about 487.1972154431.

The spelling of 115641680 in words is "one hundred fifteen million, six hundred forty-one thousand, six hundred eighty".