828821265 has 32 divisors (see below), whose sum is σ = 1360558080. Its totient is φ = 430643904.

The previous prime is 828821243. The next prime is 828821299. The reversal of 828821265 is 562128828.

828821265 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 828821265 - 2⁵ = 828821233 is a prime.

It is a super-3 number, since 3×828821265³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 157446 + ... + 162624.

It is an arithmetic number, because the mean of its divisors is an integer number (42517440).

Almost surely, 2^828821265 is an apocalyptic number.

It is an amenable number.

828821265 is a deficient number, since it is larger than the sum of its proper divisors (531736815).

828821265 is a wasteful number, since it uses less digits than its factorization.

828821265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5461.

The product of its digits is 122880, while the sum is 42.

The square root of 828821265 is about 28789.2560688879. The cubic root of 828821265 is about 939.3345467480.

The spelling of 828821265 in words is "eight hundred twenty-eight million, eight hundred twenty-one thousand, two hundred sixty-five".