28519257984 has 256 divisors, whose sum is σ = 90008064000. Its totient is φ = 7829176320.

The previous prime is 28519257983. The next prime is 28519258003. The reversal of 28519257984 is 48975291582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28519257983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12414724 + ... + 12417020.

It is an arithmetic number, because the mean of its divisors is an integer number (351594000).

Almost surely, 2^28519257984 is an apocalyptic number.

28519257984 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 28519257984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45004032000).

28519257984 is an abundant number, since it is smaller than the sum of its proper divisors (61488806016).

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

28519257984 is a wasteful number, since it uses less digits than its factorization.

28519257984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501 (or 2489 counting only the distinct ones).

The product of its digits is 14515200, while the sum is 60.

The spelling of 28519257984 in words is "twenty-eight billion, five hundred nineteen million, two hundred fifty-seven thousand, nine hundred eighty-four".