840744032 has 48 divisors (see below), whose sum is σ = 1711432800. Its totient is φ = 406287360.

The previous prime is 840744013. The next prime is 840744043. The reversal of 840744032 is 230447048.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 840744032.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 140069 + ... + 145947.

It is an arithmetic number, because the mean of its divisors is an integer number (35654850).

Almost surely, 2^840744032 is an apocalyptic number.

840744032 is a gapful number since it is divisible by the number (82) 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 840744032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (855716400).

840744032 is an abundant number, since it is smaller than the sum of its proper divisors (870688768).

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

840744032 is a wasteful number, since it uses less digits than its factorization.

840744032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6039 (or 6031 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 840744032 is about 28995.5864227644. The cubic root of 840744032 is about 943.8172944310.

The spelling of 840744032 in words is "eight hundred forty million, seven hundred forty-four thousand, thirty-two".