3447856 has 20 divisors (see below), whose sum is σ = 6742872. Its totient is φ = 1707776.

The previous prime is 3447853. The next prime is 3447859. The reversal of 3447856 is 6587443.

It is an interprime number because it is at equal distance from previous prime (3447853) and next prime (3447859).

It is not an unprimeable number, because it can be changed into a prime (3447853) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855 + ... + 2761.

Almost surely, 2^3447856 is an apocalyptic number.

It is an amenable number.

3447856 is a deficient number, since it is larger than the sum of its proper divisors (3295016).

3447856 is a wasteful number, since it uses less digits than its factorization.

3447856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2028 (or 2022 counting only the distinct ones).

The product of its digits is 80640, while the sum is 37.

The square root of 3447856 is about 1856.8403270071. The cubic root of 3447856 is about 151.0716733555.

Adding to 3447856 its product of digits (80640), we get a triangular number (3528496 = T₂₆₅₆).

The spelling of 3447856 in words is "three million, four hundred forty-seven thousand, eight hundred fifty-six".