828821468212 has 24 divisors (see below), whose sum is σ = 1503736020360. Its totient is φ = 399245145600.

The previous prime is 828821468173. The next prime is 828821468219. The reversal of 828821468212 is 212864128828.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 549534585636 + 279286882576 = 741306^2 + 528476^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 828821468212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828821468219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7764289 + ... + 7870312.

It is an arithmetic number, because the mean of its divisors is an integer number (62655667515).

Almost surely, 2^828821468212 is an apocalyptic number.

It is an amenable number.

828821468212 is a deficient number, since it is larger than the sum of its proper divisors (674914552148).

828821468212 is a wasteful number, since it uses less digits than its factorization.

828821468212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15635091 (or 15635089 counting only the distinct ones).

The product of its digits is 1572864, while the sum is 52.

The spelling of 828821468212 in words is "eight hundred twenty-eight billion, eight hundred twenty-one million, four hundred sixty-eight thousand, two hundred twelve".