3402520 has 96 divisors (see below), whose sum is σ = 9097200. Its totient is φ = 1140480.

The previous prime is 3402517. The next prime is 3402521. The reversal of 3402520 is 252043.

It is a junction number, because it is equal to n+sod(n) for n = 3402494 and 3402503.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3402521) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91942 + ... + 91978.

Almost surely, 2^3402520 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 3402520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4548600).

3402520 is an abundant number, since it is smaller than the sum of its proper divisors (5694680).

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

3402520 is a wasteful number, since it uses less digits than its factorization.

3402520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 74 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 16.

The square root of 3402520 is about 1844.5920958304. The cubic root of 3402520 is about 150.4066005478.

Adding to 3402520 its reverse (252043), we get a palindrome (3654563).

The spelling of 3402520 in words is "three million, four hundred two thousand, five hundred twenty".