28868803488 has 384 divisors, whose sum is σ = 98440151040. Its totient is φ = 8060912640.

The previous prime is 28868803477. The next prime is 28868803493. The reversal of 28868803488 is 88430886882.

28868803488 is a `hidden beast` number, since 288 + 6 + 8 + 8 + 0 + 348 + 8 = 666.

It is a super-2 number, since 2×28868803488² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

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, 77396070 + ... + 77396442.

It is an arithmetic number, because the mean of its divisors is an integer number (256354560).

Almost surely, 2^28868803488 is an apocalyptic number.

28868803488 is a gapful number since it is divisible by the number (28) 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 28868803488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49220075520).

28868803488 is an abundant number, since it is smaller than the sum of its proper divisors (69571347552).

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

28868803488 is a wasteful number, since it uses less digits than its factorization.

28868803488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 37748736, while the sum is 63.

The spelling of 28868803488 in words is "twenty-eight billion, eight hundred sixty-eight million, eight hundred three thousand, four hundred eighty-eight".