115881644 has 6 divisors (see below), whose sum is σ = 202792884. Its totient is φ = 57940820.

The previous prime is 115881637. The next prime is 115881653. The reversal of 115881644 is 446188511.

It is a super-2 number, since 2×115881644² = 26857110832285472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 115881598 and 115881607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14485202 + ... + 14485209.

It is an arithmetic number, because the mean of its divisors is an integer number (33798814).

Almost surely, 2^115881644 is an apocalyptic number.

It is an amenable number.

115881644 is a deficient number, since it is larger than the sum of its proper divisors (86911240).

115881644 is a wasteful number, since it uses less digits than its factorization.

115881644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28970415 (or 28970413 counting only the distinct ones).

The product of its digits is 30720, while the sum is 38.

The square root of 115881644 is about 10764.8336726584. The cubic root of 115881644 is about 487.5339712465.

The spelling of 115881644 in words is "one hundred fifteen million, eight hundred eighty-one thousand, six hundred forty-four".