28860021024 has 96 divisors (see below), whose sum is σ = 76488572160. Its totient is φ = 9527481600.

The previous prime is 28860021023. The next prime is 28860021067. The reversal of 28860021024 is 42012006882.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (28860021023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7178887 + ... + 7182905.

It is an arithmetic number, because the mean of its divisors is an integer number (796755960).

Almost surely, 2^28860021024 is an apocalyptic number.

28860021024 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 28860021024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38244286080).

28860021024 is an abundant number, since it is smaller than the sum of its proper divisors (47628551136).

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

28860021024 is a wasteful number, since it uses less digits than its factorization.

28860021024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4734 (or 4726 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The spelling of 28860021024 in words is "twenty-eight billion, eight hundred sixty million, twenty-one thousand, twenty-four".