3398640 has 180 divisors, whose sum is σ = 13019256. Its totient is φ = 731136.

The previous prime is 3398639. The next prime is 3398651. The reversal of 3398640 is 468933.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 199912 + ... + 199928.

Almost surely, 2^3398640 is an apocalyptic number.

3398640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3398640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6509628).

3398640 is an abundant number, since it is smaller than the sum of its proper divisors (9620616).

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

3398640 is a wasteful number, since it uses less digits than its factorization.

3398640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 3398640 is about 1843.5400727947. The cubic root of 3398640 is about 150.3494076854.

The spelling of 3398640 in words is "three million, three hundred ninety-eight thousand, six hundred forty".