6890388 has 48 divisors (see below), whose sum is σ = 17310720. Its totient is φ = 2126304.

The previous prime is 6890353. The next prime is 6890413. The reversal of 6890388 is 8830986.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10395 + ... + 11037.

It is an arithmetic number, because the mean of its divisors is an integer number (360640).

Almost surely, 2^6890388 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 6890388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8655360).

6890388 is an abundant number, since it is smaller than the sum of its proper divisors (10420332).

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

6890388 is a wasteful number, since it uses less digits than its factorization.

6890388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716 (or 714 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 6890388 is about 2624.9548567547. The cubic root of 6890388 is about 190.2893835857.

The spelling of 6890388 in words is "six million, eight hundred ninety thousand, three hundred eighty-eight".