28076958720 has 264 divisors, whose sum is σ = 100893584064. Its totient is φ = 7486857216.

The previous prime is 28076958649. The next prime is 28076958727. The reversal of 28076958720 is 2785967082.

It is a happy number.

It is a super-2 number, since 2×28076958720² (a number of 22 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (28076958727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1232877 + ... + 1255443.

Almost surely, 2^28076958720 is an apocalyptic number.

28076958720 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 28076958720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50446792032).

28076958720 is an abundant number, since it is smaller than the sum of its proper divisors (72816625344).

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

28076958720 is an equidigital number, since it uses as much as digits as its factorization.

28076958720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22607 (or 22577 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 54.

The spelling of 28076958720 in words is "twenty-eight billion, seventy-six million, nine hundred fifty-eight thousand, seven hundred twenty".