828390736 has 20 divisors (see below), whose sum is σ = 1631320564. Its totient is φ = 407404800.

The previous prime is 828390733. The next prime is 828390737. The reversal of 828390736 is 637093828.

It can be written as a sum of positive squares in 2 ways, for example, as 259854400 + 568536336 = 16120^2 + 23844^2 .

It is a super-2 number, since 2×828390736² = 1372462422981243392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (828390733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 423405 + ... + 425356.

Almost surely, 2^828390736 is an apocalyptic number.

It is an amenable number.

828390736 is a deficient number, since it is larger than the sum of its proper divisors (802929828).

828390736 is a wasteful number, since it uses less digits than its factorization.

828390736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848830 (or 848824 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 828390736 is about 28781.7778464083. Note that the first 3 decimals coincide. The cubic root of 828390736 is about 939.1718736347.

The spelling of 828390736 in words is "eight hundred twenty-eight million, three hundred ninety thousand, seven hundred thirty-six".