840988032 has 128 divisors (see below), whose sum is σ = 2385168000. Its totient is φ = 261771264.

The previous prime is 840988021. The next prime is 840988189. The reversal of 840988032 is 230889048.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 531819 + ... + 533397.

It is an arithmetic number, because the mean of its divisors is an integer number (18634125).

Almost surely, 2^840988032 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 840988032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1192584000).

840988032 is an abundant number, since it is smaller than the sum of its proper divisors (1544179968).

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

840988032 is a wasteful number, since it uses less digits than its factorization.

840988032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1676 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 840988032 is about 28999.7936544383. The cubic root of 840988032 is about 943.9085902104.

The spelling of 840988032 in words is "eight hundred forty million, nine hundred eighty-eight thousand, thirty-two".