28378963008 has 336 divisors, whose sum is σ = 96879095040. Its totient is φ = 8146137600.

The previous prime is 28378962977. The next prime is 28378963021. The reversal of 28378963008 is 80036987382.

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 47 ways as a sum of consecutive naturals, for example, 3246003 + ... + 3254733.

It is an arithmetic number, because the mean of its divisors is an integer number (288330640).

Almost surely, 2^28378963008 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 28378963008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48439547520).

28378963008 is an abundant number, since it is smaller than the sum of its proper divisors (68500132032).

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

28378963008 is a wasteful number, since it uses less digits than its factorization.

28378963008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8788 (or 8766 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 28378963008 in words is "twenty-eight billion, three hundred seventy-eight million, nine hundred sixty-three thousand, eight".