28338720248 has 32 divisors (see below), whose sum is σ = 59221789200. Its totient is φ = 12633979392.

The previous prime is 28338720247. The next prime is 28338720269. The reversal of 28338720248 is 84202783382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28338720247) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5480915 + ... + 5486082.

Almost surely, 2^28338720248 is an apocalyptic number.

It is an amenable number.

28338720248 is an abundant number, since it is smaller than the sum of its proper divisors (30883068952).

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

28338720248 is a wasteful number, since it uses less digits than its factorization.

28338720248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10967039 (or 10967035 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 47.

The spelling of 28338720248 in words is "twenty-eight billion, three hundred thirty-eight million, seven hundred twenty thousand, two hundred forty-eight".