28881486144 has 224 divisors, whose sum is σ = 97175116800. Its totient is φ = 8240002560.

The previous prime is 28881486097. The next prime is 28881486163. The reversal of 28881486144 is 44168418882.

28881486144 is a `hidden beast` number, since 2 + 8 + 8 + 8 + 14 + 8 + 614 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 11743987 + ... + 11746445.

Almost surely, 2^28881486144 is an apocalyptic number.

28881486144 is a gapful number since it is divisible by the number (24) 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 28881486144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48587558400).

28881486144 is an abundant number, since it is smaller than the sum of its proper divisors (68293630656).

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

28881486144 is a wasteful number, since it uses less digits than its factorization.

28881486144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458 (or 3442 counting only the distinct ones).

The product of its digits is 3145728, while the sum is 54.

The spelling of 28881486144 in words is "twenty-eight billion, eight hundred eighty-one million, four hundred eighty-six thousand, one hundred forty-four".