28890180745888 has 192 divisors, whose sum is σ = 71160575673600. Its totient is φ = 11216524861440.

The previous prime is 28890180745831. The next prime is 28890180745931. The reversal of 28890180745888 is 88854708109882.

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, 3443812798 + ... + 3443821186.

It is an arithmetic number, because the mean of its divisors is an integer number (370627998300).

Almost surely, 2^{28890180745888} is an apocalyptic number.

28890180745888 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 28890180745888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35580287836800).

28890180745888 is an abundant number, since it is smaller than the sum of its proper divisors (42270394927712).

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

28890180745888 is a wasteful number, since it uses less digits than its factorization.

28890180745888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13143 (or 13135 counting only the distinct ones).

The product of its (nonzero) digits is 660602880, while the sum is 76.

The spelling of 28890180745888 in words is "twenty-eight trillion, eight hundred ninety billion, one hundred eighty million, seven hundred forty-five thousand, eight hundred eighty-eight".