28837638336 has 224 divisors, whose sum is σ = 84728385280. Its totient is φ = 8599965696.

The previous prime is 28837638311. The next prime is 28837638397. The reversal of 28837638336 is 63383673882.

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, 14917626 + ... + 14919558.

It is an arithmetic number, because the mean of its divisors is an integer number (378251720).

Almost surely, 2^28837638336 is an apocalyptic number.

28837638336 is a gapful number since it is divisible by the number (26) 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 28837638336, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42364192640).

28837638336 is an abundant number, since it is smaller than the sum of its proper divisors (55890746944).

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

28837638336 is a wasteful number, since it uses less digits than its factorization.

28837638336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2143 (or 2133 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 57.

The spelling of 28837638336 in words is "twenty-eight billion, eight hundred thirty-seven million, six hundred thirty-eight thousand, three hundred thirty-six".