28000561248 has 96 divisors (see below), whose sum is σ = 89092725120. Its totient is φ = 8485015680.

The previous prime is 28000561243. The next prime is 28000561273. The reversal of 28000561248 is 84216500082.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28000561243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1463590 + ... + 1482597.

It is an arithmetic number, because the mean of its divisors is an integer number (928049220).

Almost surely, 2^28000561248 is an apocalyptic number.

It is an amenable number.

28000561248 is an abundant number, since it is smaller than the sum of its proper divisors (61092163872).

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

28000561248 is a wasteful number, since it uses less digits than its factorization.

28000561248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2946217 (or 2946203 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The spelling of 28000561248 in words is "twenty-eight billion, five hundred sixty-one thousand, two hundred forty-eight".