28076481720 has 192 divisors, whose sum is σ = 105208009920. Its totient is φ = 6360625152.

The previous prime is 28076481683. The next prime is 28076481739. The reversal of 28076481720 is 2718467082.

28076481720 is a `hidden beast` number, since 2 + 80 + 76 + 481 + 7 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235462 + ... + 334058.

It is an arithmetic number, because the mean of its divisors is an integer number (547958385).

Almost surely, 2^28076481720 is an apocalyptic number.

28076481720 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 28076481720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52604004960).

28076481720 is an abundant number, since it is smaller than the sum of its proper divisors (77131528200).

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

28076481720 is a wasteful number, since it uses less digits than its factorization.

28076481720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98734 (or 98727 counting only the distinct ones).

The product of its (nonzero) digits is 301056, while the sum is 45.

It can be divided in two parts, 28076 and 481720, that added together give a square (509796 = 714²).

The spelling of 28076481720 in words is "twenty-eight billion, seventy-six million, four hundred eighty-one thousand, seven hundred twenty".