6128388 has 72 divisors (see below), whose sum is σ = 17978688. Its totient is φ = 1723968.

The previous prime is 6128387. The next prime is 6128411. The reversal of 6128388 is 8838216.

6128388 is a `hidden beast` number, since 612 + 8 + 38 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (6128387) 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, 20770 + ... + 21062.

It is an arithmetic number, because the mean of its divisors is an integer number (249704).

Almost surely, 2^6128388 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 6128388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8989344).

6128388 is an abundant number, since it is smaller than the sum of its proper divisors (11850300).

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

6128388 is a wasteful number, since it uses less digits than its factorization.

6128388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 388 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 6128388 is about 2475.5581188896. The cubic root of 6128388 is about 182.9990145965. Note that the first 3 decimals are identical.

The spelling of 6128388 in words is "six million, one hundred twenty-eight thousand, three hundred eighty-eight".