840383828 has 12 divisors (see below), whose sum is σ = 1472451540. Its totient is φ = 419683392.

The previous prime is 840383809. The next prime is 840383839. The reversal of 840383828 is 828383048.

840383828 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 460445764 + 379938064 = 21458^2 + 19492^2 .

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, 123401 + ... + 130032.

It is an arithmetic number, because the mean of its divisors is an integer number (122704295).

Almost surely, 2^840383828 is an apocalyptic number.

It is an amenable number.

840383828 is a deficient number, since it is larger than the sum of its proper divisors (632067712).

840383828 is a wasteful number, since it uses less digits than its factorization.

840383828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254266 (or 254264 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 44.

The square root of 840383828 is about 28989.3743982170. The cubic root of 840383828 is about 943.6824871196.

The spelling of 840383828 in words is "eight hundred forty million, three hundred eighty-three thousand, eight hundred twenty-eight".