840505002 has 32 divisors (see below), whose sum is σ = 1727066880. Its totient is φ = 272532480.

The previous prime is 840504997. The next prime is 840505013. The reversal of 840505002 is 200505048.

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 15 ways as a sum of consecutive naturals, for example, 81999 + ... + 91677.

It is an arithmetic number, because the mean of its divisors is an integer number (53970840).

Almost surely, 2^840505002 is an apocalyptic number.

840505002 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

840505002 is an abundant number, since it is smaller than the sum of its proper divisors (886561878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

840505002 is a wasteful number, since it uses less digits than its factorization.

840505002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10078.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 840505002 is about 28991.4642955474. The cubic root of 840505002 is about 943.7278411124.

The spelling of 840505002 in words is "eight hundred forty million, five hundred five thousand, two".