828109633 has 6 divisors (see below), whose sum is σ = 896710614. Its totient is φ = 764408736.

The previous prime is 828109631. The next prime is 828109637. The reversal of 828109633 is 336901828.

It can be written as a sum of positive squares in 3 ways, for example, as 13749264 + 814360369 = 3708^2 + 28537^2 .

It is not a de Polignac number, because 828109633 - 2¹ = 828109631 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (828109631) 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, 2449860 + ... + 2450197.

It is an arithmetic number, because the mean of its divisors is an integer number (149451769).

Almost surely, 2^828109633 is an apocalyptic number.

It is an amenable number.

828109633 is a deficient number, since it is larger than the sum of its proper divisors (68600981).

828109633 is a wasteful number, since it uses less digits than its factorization.

828109633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4900083 (or 4900070 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 828109633 is about 28776.8940818845. The cubic root of 828109633 is about 939.0656299313.

The spelling of 828109633 in words is "eight hundred twenty-eight million, one hundred nine thousand, six hundred thirty-three".