32440856 has 64 divisors (see below), whose sum is σ = 73612800. Its totient is φ = 13102848.

The previous prime is 32440841. The next prime is 32440867. The reversal of 32440856 is 65804423.

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 15 ways as a sum of consecutive naturals, for example, 114491 + ... + 114773.

It is an arithmetic number, because the mean of its divisors is an integer number (1150200).

Almost surely, 2^32440856 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 32440856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36806400).

32440856 is an abundant number, since it is smaller than the sum of its proper divisors (41171944).

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

32440856 is a wasteful number, since it uses less digits than its factorization.

32440856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 404 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 32440856 is about 5695.6874914272. The cubic root of 32440856 is about 318.9315144038.

The spelling of 32440856 in words is "thirty-two million, four hundred forty thousand, eight hundred fifty-six".