28515201024 has 104 divisors (see below), whose sum is σ = 76320723712. Its totient is φ = 9468887040.

The previous prime is 28515201019. The next prime is 28515201101. The reversal of 28515201024 is 42010251582.

It is a junction number, because it is equal to n+sod(n) for n = 28515200982 and 28515201000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3325767 + ... + 3334329.

Almost surely, 2^28515201024 is an apocalyptic number.

28515201024 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 28515201024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38160361856).

28515201024 is an abundant number, since it is smaller than the sum of its proper divisors (47805522688).

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

28515201024 is an equidigital number, since it uses as much as digits as its factorization.

28515201024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8861 (or 8839 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 30.

The spelling of 28515201024 in words is "twenty-eight billion, five hundred fifteen million, two hundred one thousand, twenty-four".