3385840 has 20 divisors (see below), whose sum is σ = 7872264. Its totient is φ = 1354304.

The previous prime is 3385829. The next prime is 3385841. The reversal of 3385840 is 485833.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×3385840² = 22927825011200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3385841) 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, 21082 + ... + 21241.

Almost surely, 2^3385840 is an apocalyptic number.

It is an amenable number.

3385840 is an abundant number, since it is smaller than the sum of its proper divisors (4486424).

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

3385840 is a wasteful number, since it uses less digits than its factorization.

3385840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42336 (or 42330 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 3385840 is about 1840.0652162356. The cubic root of 3385840 is about 150.1604209655.

It can be divided in two parts, 3385 and 840, that added together give a square (4225 = 65²).

The spelling of 3385840 in words is "three million, three hundred eighty-five thousand, eight hundred forty".