28989287424 has 352 divisors, whose sum is σ = 89609472000. Its totient is φ = 9247703040.

The previous prime is 28989287413. The next prime is 28989287441. The reversal of 28989287424 is 42478298982.

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, 127705999 + ... + 127706225.

Almost surely, 2^28989287424 is an apocalyptic number.

28989287424 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 28989287424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44804736000).

28989287424 is an abundant number, since it is smaller than the sum of its proper divisors (60620184576).

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

28989287424 is a wasteful number, since it uses less digits than its factorization.

28989287424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 412 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 63.

The spelling of 28989287424 in words is "twenty-eight billion, nine hundred eighty-nine million, two hundred eighty-seven thousand, four hundred twenty-four".