3420856 has 16 divisors (see below), whose sum is σ = 6474600. Its totient is φ = 1694304.

The previous prime is 3420839. The next prime is 3420871. The reversal of 3420856 is 6580243.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1090 + ... + 2833.

Almost surely, 2^3420856 is an apocalyptic number.

It is an amenable number.

3420856 is a deficient number, since it is larger than the sum of its proper divisors (3053744).

3420856 is a wasteful number, since it uses less digits than its factorization.

3420856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038 (or 4034 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 3420856 is about 1849.5556223050. Note that the first 3 decimals coincide. The cubic root of 3420856 is about 150.6762944048.

The spelling of 3420856 in words is "three million, four hundred twenty thousand, eight hundred fifty-six".