6387888 has 80 divisors (see below), whose sum is σ = 18436320. Its totient is φ = 1892352.

The previous prime is 6387883. The next prime is 6387893. The reversal of 6387888 is 8887836.

It is an interprime number because it is at equal distance from previous prime (6387883) and next prime (6387893).

It is a super-2 number, since 2×6387888² = 81610226201088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (6387881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17920 + ... + 18272.

It is an arithmetic number, because the mean of its divisors is an integer number (230454).

Almost surely, 2^6387888 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 6387888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9218160).

6387888 is an abundant number, since it is smaller than the sum of its proper divisors (12048432).

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

6387888 is a wasteful number, since it uses less digits than its factorization.

6387888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 400 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 6387888 is about 2527.4271502854. The cubic root of 6387888 is about 185.5463566236.

The spelling of 6387888 in words is "six million, three hundred eighty-seven thousand, eight hundred eighty-eight".