115821804 has 24 divisors (see below), whose sum is σ = 308858368. Its totient is φ = 33091920.

The previous prime is 115821793. The next prime is 115821817. The reversal of 115821804 is 408128511.

It is a happy number.

115821804 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

115821804 is strictly pandigital in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689332 + ... + 689499.

Almost surely, 2^115821804 is an apocalyptic number.

115821804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

115821804 is an abundant number, since it is smaller than the sum of its proper divisors (193036564).

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

115821804 is a wasteful number, since it uses less digits than its factorization.

115821804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378845 (or 1378843 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 30.

The square root of 115821804 is about 10762.0538931934. The cubic root of 115821804 is about 487.4500377462.

The spelling of 115821804 in words is "one hundred fifteen million, eight hundred twenty-one thousand, eight hundred four".