828451172 has 6 divisors (see below), whose sum is σ = 1449789558. Its totient is φ = 414225584.

The previous prime is 828451171. The next prime is 828451189. The reversal of 828451172 is 271154828.

It can be written as a sum of positive squares in only one way, i.e., 823460416 + 4990756 = 28696^2 + 2234^2 .

It is not an unprimeable number, because it can be changed into a prime (828451171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103556393 + ... + 103556400.

It is an arithmetic number, because the mean of its divisors is an integer number (241631593).

Almost surely, 2^828451172 is an apocalyptic number.

It is an amenable number.

828451172 is a deficient number, since it is larger than the sum of its proper divisors (621338386).

828451172 is a wasteful number, since it uses less digits than its factorization.

828451172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207112797 (or 207112795 counting only the distinct ones).

The product of its digits is 35840, while the sum is 38.

The square root of 828451172 is about 28782.8277276573. The cubic root of 828451172 is about 939.1947124589.

The spelling of 828451172 in words is "eight hundred twenty-eight million, four hundred fifty-one thousand, one hundred seventy-two".