28693425280 has 256 divisors, whose sum is σ = 76265481600. Its totient is φ = 10255859712.

The previous prime is 28693425239. The next prime is 28693425307. The reversal of 28693425280 is 8252439682.

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, 49728352 + ... + 49728928.

Almost surely, 2^28693425280 is an apocalyptic number.

28693425280 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 28693425280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38132740800).

28693425280 is an abundant number, since it is smaller than the sum of its proper divisors (47572056320).

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

28693425280 is a wasteful number, since it uses less digits than its factorization.

28693425280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 28693425280 in words is "twenty-eight billion, six hundred ninety-three million, four hundred twenty-five thousand, two hundred eighty".