28305217248 has 96 divisors (see below), whose sum is σ = 92635280640. Its totient is φ = 7352002560.

The previous prime is 28305217247. The next prime is 28305217267. The reversal of 28305217248 is 84271250382.

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 (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28305217247) 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 15 ways as a sum of consecutive naturals, for example, 1907193 + ... + 1921976.

It is an arithmetic number, because the mean of its divisors is an integer number (964950840).

Almost surely, 2^28305217248 is an apocalyptic number.

28305217248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28305217248 is an abundant number, since it is smaller than the sum of its proper divisors (64330063392).

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

28305217248 is a wasteful number, since it uses less digits than its factorization.

28305217248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3829200 (or 3829192 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 42.

The spelling of 28305217248 in words is "twenty-eight billion, three hundred five million, two hundred seventeen thousand, two hundred forty-eight".