828768478 has 8 divisors (see below), whose sum is σ = 1243277640. Its totient is φ = 414342600.

The previous prime is 828768469. The next prime is 828768491. The reversal of 828768478 is 874867828.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×828768478³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20308 + ... + 45496.

It is an arithmetic number, because the mean of its divisors is an integer number (155409705).

Almost surely, 2^828768478 is an apocalyptic number.

828768478 is a deficient number, since it is larger than the sum of its proper divisors (414509162).

828768478 is a wasteful number, since it uses less digits than its factorization.

828768478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41642.

The product of its digits is 9633792, while the sum is 58.

The square root of 828768478 is about 28788.3392713091. The cubic root of 828768478 is about 939.3146044888.

The spelling of 828768478 in words is "eight hundred twenty-eight million, seven hundred sixty-eight thousand, four hundred seventy-eight".