3880656 has 80 divisors (see below), whose sum is σ = 12013120. Its totient is φ = 1192320.

The previous prime is 3880633. The next prime is 3880661. The reversal of 3880656 is 6560883.

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

It is a self number, because there is not a number n which added to its sum of digits gives 3880656.

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, 5271 + ... + 5961.

It is an arithmetic number, because the mean of its divisors is an integer number (150164).

Almost surely, 2^3880656 is an apocalyptic number.

3880656 is a gapful number since it is divisible by the number (36) 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 3880656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6006560).

3880656 is an abundant number, since it is smaller than the sum of its proper divisors (8132464).

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

3880656 is a wasteful number, since it uses less digits than its factorization.

3880656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 721 (or 709 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 3880656 is about 1969.9380700926. The cubic root of 3880656 is about 157.1454154641.

The spelling of 3880656 in words is "three million, eight hundred eighty thousand, six hundred fifty-six".