840034646228 has 12 divisors (see below), whose sum is σ = 1505915768532. Its totient is φ = 409772998080.

The previous prime is 840034646207. The next prime is 840034646237. The reversal of 840034646228 is 822646430048.

It can be written as a sum of positive squares in 2 ways, for example, as 315122804164 + 524911842064 = 561358^2 + 724508^2 .

It is a super-2 number, since 2×840034646228² (a number of 25 digits) contains 22 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 (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2561081075 + ... + 2561081402.

It is an arithmetic number, because the mean of its divisors is an integer number (125492980711).

Almost surely, 2^840034646228 is an apocalyptic number.

It is an amenable number.

840034646228 is a deficient number, since it is larger than the sum of its proper divisors (665881122304).

840034646228 is a wasteful number, since it uses less digits than its factorization.

840034646228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5122162522 (or 5122162520 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 47.

The spelling of 840034646228 in words is "eight hundred forty billion, thirty-four million, six hundred forty-six thousand, two hundred twenty-eight".