3406840 has 32 divisors (see below), whose sum is σ = 7814880. Its totient is φ = 1336192.

The previous prime is 3406811. The next prime is 3406841. The reversal of 3406840 is 486043.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3406841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1317 + ... + 2923.

It is an arithmetic number, because the mean of its divisors is an integer number (244215).

Almost surely, 2^3406840 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 3406840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3907440).

3406840 is an abundant number, since it is smaller than the sum of its proper divisors (4408040).

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

3406840 is a wasteful number, since it uses less digits than its factorization.

3406840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671 (or 1667 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 3406840 is about 1845.7627149772. The cubic root of 3406840 is about 150.4702280671.

The spelling of 3406840 in words is "three million, four hundred six thousand, eight hundred forty".