3407856 has 20 divisors (see below), whose sum is σ = 8803752. Its totient is φ = 1135936.

The previous prime is 3407851. The next prime is 3407857. The reversal of 3407856 is 6587043.

It is a super-2 number, since 2×3407856² = 23226965033472, which contains 22 as substring.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3407851) 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, 35451 + ... + 35546.

Almost surely, 2^3407856 is an apocalyptic number.

It is an amenable number.

3407856 is an abundant number, since it is smaller than the sum of its proper divisors (5395896).

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

3407856 is a wasteful number, since it uses less digits than its factorization.

3407856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71008 (or 71002 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 3407856 is about 1846.0379194372. The cubic root of 3407856 is about 150.4851845035.

The spelling of 3407856 in words is "three million, four hundred seven thousand, eight hundred fifty-six".