28906707456 has 240 divisors, whose sum is σ = 91309870080. Its totient is φ = 8730869760.

The previous prime is 28906707449. The next prime is 28906707457. The reversal of 28906707456 is 65470760982.

It is not an unprimeable number, because it can be changed into a prime (28906707457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19412760 + ... + 19414248.

It is an arithmetic number, because the mean of its divisors is an integer number (380457792).

Almost surely, 2^28906707456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28906707456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45654935040).

28906707456 is an abundant number, since it is smaller than the sum of its proper divisors (62403162624).

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

28906707456 is a wasteful number, since it uses less digits than its factorization.

28906707456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907 (or 1888 counting only the distinct ones).

The product of its (nonzero) digits is 5080320, while the sum is 54.

The spelling of 28906707456 in words is "twenty-eight billion, nine hundred six million, seven hundred seven thousand, four hundred fifty-six".