28003899264 has 320 divisors, whose sum is σ = 86932213200. Its totient is φ = 7959592960.

The previous prime is 28003899199. The next prime is 28003899277. The reversal of 28003899264 is 46299830082.

It is a super-3 number, since 3×28003899264³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 95576302 + ... + 95576594.

Almost surely, 2^28003899264 is an apocalyptic number.

28003899264 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 28003899264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43466106600).

28003899264 is an abundant number, since it is smaller than the sum of its proper divisors (58928313936).

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

28003899264 is an equidigital number, since it uses as much as digits as its factorization.

28003899264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 51.

The spelling of 28003899264 in words is "twenty-eight billion, three million, eight hundred ninety-nine thousand, two hundred sixty-four".