28722030480 has 480 divisors, whose sum is σ = 114720907392. Its totient is φ = 6347980800.

The previous prime is 28722030443. The next prime is 28722030481. The reversal of 28722030480 is 8403022782.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28722030481) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8544000 + ... + 8547360.

Almost surely, 2^28722030480 is an apocalyptic number.

28722030480 is a gapful number since it is divisible by the number (20) 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 28722030480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57360453696).

28722030480 is an abundant number, since it is smaller than the sum of its proper divisors (85998876912).

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

28722030480 is a wasteful number, since it uses less digits than its factorization.

28722030480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3487 (or 3478 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 36.

The spelling of 28722030480 in words is "twenty-eight billion, seven hundred twenty-two million, thirty thousand, four hundred eighty".