28306484400 has 120 divisors (see below), whose sum is σ = 93600231424. Its totient is φ = 7304889600.

The previous prime is 28306484351. The next prime is 28306484407. The reversal of 28306484400 is 448460382.

It is a tau number, because it is divible by the number of its divisors (120).

It is not an unprimeable number, because it can be changed into a prime (28306484407) 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, 343264 + ... + 417663.

Almost surely, 2^28306484400 is an apocalyptic number.

28306484400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28306484400 is an abundant number, since it is smaller than the sum of its proper divisors (65293747024).

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

28306484400 is a wasteful number, since it uses less digits than its factorization.

28306484400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760979 (or 760968 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 39.

The spelling of 28306484400 in words is "twenty-eight billion, three hundred six million, four hundred eighty-four thousand, four hundred".