3385520 has 40 divisors (see below), whose sum is σ = 7968240. Its totient is φ = 1337600.

The previous prime is 3385517. The next prime is 3385559. The reversal of 3385520 is 255833.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×3385520² = 22923491340800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3385520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7871 + ... + 8289.

It is an arithmetic number, because the mean of its divisors is an integer number (199206).

Almost surely, 2^3385520 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 3385520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3984120).

3385520 is an abundant number, since it is smaller than the sum of its proper divisors (4582720).

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

3385520 is a wasteful number, since it uses less digits than its factorization.

3385520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533 (or 527 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 3385520 is about 1839.9782607411. The cubic root of 3385520 is about 150.1556901997.

The spelling of 3385520 in words is "three million, three hundred eighty-five thousand, five hundred twenty".