828444087 has 12 divisors (see below), whose sum is σ = 1196920504. Its totient is φ = 552167280.

The previous prime is 828444083. The next prime is 828444139. The reversal of 828444087 is 780444828.

It is a happy number.

828444087 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 828444087 - 2² = 828444083 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828444083) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45537 + ... + 61077.

Almost surely, 2^828444087 is an apocalyptic number.

828444087 is a deficient number, since it is larger than the sum of its proper divisors (368476417).

828444087 is a wasteful number, since it uses less digits than its factorization.

828444087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21470 (or 21467 counting only the distinct ones).

The product of its (nonzero) digits is 458752, while the sum is 45.

The square root of 828444087 is about 28782.7046505362. The cubic root of 828444087 is about 939.1920350878.

The spelling of 828444087 in words is "eight hundred twenty-eight million, four hundred forty-four thousand, eighty-seven".