3406520 has 32 divisors (see below), whose sum is σ = 8255520. Its totient is φ = 1257600.

The previous prime is 3406493. The next prime is 3406523. The reversal of 3406520 is 256043.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 3406492 and 3406501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3406523) 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, 2756 + ... + 3795.

It is an arithmetic number, because the mean of its divisors is an integer number (257985).

Almost surely, 2^3406520 is an apocalyptic number.

It is an amenable number.

3406520 is an abundant number, since it is smaller than the sum of its proper divisors (4849000).

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

3406520 is a wasteful number, since it uses less digits than its factorization.

3406520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6575 (or 6571 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 3406520 is about 1845.6760279096. The cubic root of 3406520 is about 150.4655167627.

The spelling of 3406520 in words is "three million, four hundred six thousand, five hundred twenty".