28881090084 has 384 divisors, whose sum is σ = 91738386432. Its totient is φ = 6843432960.

The previous prime is 28881089983. The next prime is 28881090127. The reversal of 28881090084 is 48009018882.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 94075059 + ... + 94075365.

It is an arithmetic number, because the mean of its divisors is an integer number (238902048).

Almost surely, 2^28881090084 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 28881090084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45869193216).

28881090084 is an abundant number, since it is smaller than the sum of its proper divisors (62857296348).

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

28881090084 is a wasteful number, since it uses less digits than its factorization.

28881090084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515 (or 513 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 48.

The spelling of 28881090084 in words is "twenty-eight billion, eight hundred eighty-one million, ninety thousand, eighty-four".