840268800 has 396 divisors, whose sum is σ = 3444953616. Its totient is φ = 191692800.

The previous prime is 840268799. The next prime is 840268811. The reversal of 840268800 is 8862048.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1612540 + ... + 1613060.

Almost surely, 2^840268800 is an apocalyptic number.

840268800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 840268800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1722476808).

840268800 is an abundant number, since it is smaller than the sum of its proper divisors (2604684816).

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

840268800 is a wasteful number, since it uses less digits than its factorization.

840268800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564 (or 538 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 840268800 is about 28987.3903620178. The cubic root of 840268800 is about 943.6394294681.

The spelling of 840268800 in words is "eight hundred forty million, two hundred sixty-eight thousand, eight hundred".