828638452 has 12 divisors (see below), whose sum is σ = 1451183076. Its totient is φ = 414014720.

The previous prime is 828638449. The next prime is 828638477. The reversal of 828638452 is 254836828.

It can be written as a sum of positive squares in 2 ways, for example, as 398241936 + 430396516 = 19956^2 + 20746^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69949 + ... + 80932.

It is an arithmetic number, because the mean of its divisors is an integer number (120931923).

Almost surely, 2^828638452 is an apocalyptic number.

It is an amenable number.

828638452 is a deficient number, since it is larger than the sum of its proper divisors (622544624).

828638452 is a wasteful number, since it uses less digits than its factorization.

828638452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152258 (or 152256 counting only the distinct ones).

The product of its digits is 737280, while the sum is 46.

The square root of 828638452 is about 28786.0808725328. The cubic root of 828638452 is about 939.2654787029.

The spelling of 828638452 in words is "eight hundred twenty-eight million, six hundred thirty-eight thousand, four hundred fifty-two".