840646327400 has 96 divisors (see below), whose sum is σ = 2133569916000. Its totient is φ = 305490988800.

The previous prime is 840646327379. The next prime is 840646327427. The reversal of 840646327400 is 4723646048.

It is a super-2 number, since 2×840646327400² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3284459 + ... + 3531141.

It is an arithmetic number, because the mean of its divisors is an integer number (22224686625).

Almost surely, 2^840646327400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840646327400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1066784958000).

840646327400 is an abundant number, since it is smaller than the sum of its proper divisors (1292923588600).

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

840646327400 is a wasteful number, since it uses less digits than its factorization.

840646327400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248259 (or 248250 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 44.

The spelling of 840646327400 in words is "eight hundred forty billion, six hundred forty-six million, three hundred twenty-seven thousand, four hundred".