28772941824 has 480 divisors, whose sum is σ = 95438474880. Its totient is φ = 8599633920.

The previous prime is 28772941777. The next prime is 28772941837. The reversal of 28772941824 is 42814927782.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 394149852 + ... + 394149924.

It is an arithmetic number, because the mean of its divisors is an integer number (198830156).

Almost surely, 2^28772941824 is an apocalyptic number.

28772941824 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 28772941824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47719237440).

28772941824 is an abundant number, since it is smaller than the sum of its proper divisors (66665533056).

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

28772941824 is an frugal number, since it uses more digits than its factorization.

28772941824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 89 counting only the distinct ones).

The product of its digits is 3612672, while the sum is 54.

The spelling of 28772941824 in words is "twenty-eight billion, seven hundred seventy-two million, nine hundred forty-one thousand, eight hundred twenty-four".