39680256 has 216 divisors, whose sum is σ = 134838592. Its totient is φ = 10137600.

The previous prime is 39680237. The next prime is 39680297. The reversal of 39680256 is 65208693.

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 23 ways as a sum of consecutive naturals, for example, 650466 + ... + 650526.

Almost surely, 2^39680256 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 39680256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67419296).

39680256 is an abundant number, since it is smaller than the sum of its proper divisors (95158336).

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

39680256 is a wasteful number, since it uses less digits than its factorization.

39680256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 39680256 is about 6299.2266191970. The cubic root of 39680256 is about 341.0814928367.

The spelling of 39680256 in words is "thirty-nine million, six hundred eighty thousand, two hundred fifty-six".