6388228836 has 96 divisors (see below), whose sum is σ = 18233846400. Its totient is φ = 1918028160.

The previous prime is 6388228799. The next prime is 6388228853.

6388228836 is a `hidden beast` number, since 6 + 388 + 228 + 8 + 36 = 666.

6388228836 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×6388228836² = 81618935322203829792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104826 + ... + 154158.

It is an arithmetic number, because the mean of its divisors is an integer number (189935900).

Almost surely, 2^6388228836 is an apocalyptic number.

6388228836 is a gapful number since it is divisible by the number (66) 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 6388228836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9116923200).

6388228836 is an abundant number, since it is smaller than the sum of its proper divisors (11845617564).

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

6388228836 is a wasteful number, since it uses less digits than its factorization.

6388228836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49466 (or 49458 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The square root of 6388228836 is about 79926.3963656563. The cubic root of 6388228836 is about 1855.4965660592.

The spelling of 6388228836 in words is "six billion, three hundred eighty-eight million, two hundred twenty-eight thousand, eight hundred thirty-six".