28428254880 has 192 divisors, whose sum is σ = 92651102208. Its totient is φ = 7319393280.

The previous prime is 28428254873. The next prime is 28428254891. The reversal of 28428254880 is 8845282482.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7244599 + ... + 7248521.

It is an arithmetic number, because the mean of its divisors is an integer number (482557824).

Almost surely, 2^28428254880 is an apocalyptic number.

28428254880 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 28428254880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46325551104).

28428254880 is an abundant number, since it is smaller than the sum of its proper divisors (64222847328).

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

28428254880 is a wasteful number, since it uses less digits than its factorization.

28428254880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4459 (or 4451 counting only the distinct ones).

The product of its (nonzero) digits is 2621440, while the sum is 51.

The spelling of 28428254880 in words is "twenty-eight billion, four hundred twenty-eight million, two hundred fifty-four thousand, eight hundred eighty".