28329140450 has 54 divisors (see below), whose sum is σ = 57088414467. Its totient is φ = 10454277600.

The previous prime is 28329140447. The next prime is 28329140491. The reversal of 28329140450 is 5404192382.

It can be written as a sum of positive squares in 5 ways, for example, as 1773504769 + 26555635681 = 42113^2 + 162959^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=119015.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 15471035 + ... + 15472865.

Almost surely, 2^28329140450 is an apocalyptic number.

28329140450 is an abundant number, since it is smaller than the sum of its proper divisors (28759274017).

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

28329140450 is an equidigital number, since it uses as much as digits as its factorization.

28329140450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3700 (or 1851 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 28329140450 in words is "twenty-eight billion, three hundred twenty-nine million, one hundred forty thousand, four hundred fifty".