115781004 has 18 divisors (see below), whose sum is σ = 292668740. Its totient is φ = 38593656.

The previous prime is 115780981. The next prime is 115781009. The reversal of 115781004 is 400187511.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (115781009) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1608034 + ... + 1608105.

Almost surely, 2^115781004 is an apocalyptic number.

It is an amenable number.

115781004 is an abundant number, since it is smaller than the sum of its proper divisors (176887736).

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

115781004 is a wasteful number, since it uses less digits than its factorization.

115781004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216149 (or 3216144 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 115781004 is about 10760.1581772760. The cubic root of 115781004 is about 487.3927937830.

The spelling of 115781004 in words is "one hundred fifteen million, seven hundred eighty-one thousand, four".