8368228638 has 128 divisors (see below), whose sum is σ = 23328829440. Its totient is φ = 2160056160.

The previous prime is 8368228619. The next prime is 8368228679.

8368228638 is nontrivially palindromic in base 10.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 671581 + ... + 683927.

It is an arithmetic number, because the mean of its divisors is an integer number (182256480).

Almost surely, 2^8368228638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8368228638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11664414720).

8368228638 is an abundant number, since it is smaller than the sum of its proper divisors (14960600802).

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

8368228638 is a wasteful number, since it uses less digits than its factorization.

8368228638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12539 (or 12533 counting only the distinct ones).

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

The square root of 8368228638 is about 91478.0227049098. The cubic root of 8368228638 is about 2030.2265949425.

It can be divided in two parts, 83 and 68228638, that added together give a triangular number (68228721 = T₁₁₆₈₁).

The spelling of 8368228638 in words is "eight billion, three hundred sixty-eight million, two hundred twenty-eight thousand, six hundred thirty-eight".