28394809392480 has 96 divisors (see below), whose sum is σ = 94705040765664. Its totient is φ = 7126540394496.

The previous prime is 28394809392451. The next prime is 28394809392491. The reversal of 28394809392480 is 8429390849382.

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

It is a super-3 number, since 3×28394809392480³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1739869867 + ... + 1739886186.

It is an arithmetic number, because the mean of its divisors is an integer number (986510841309).

Almost surely, 2^{28394809392480} is an apocalyptic number.

28394809392480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28394809392480 is an abundant number, since it is smaller than the sum of its proper divisors (66310231373184).

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

28394809392480 is a wasteful number, since it uses less digits than its factorization.

28394809392480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3479756088 (or 3479756080 counting only the distinct ones).

The product of its (nonzero) digits is 214990848, while the sum is 69.

The spelling of 28394809392480 in words is "twenty-eight trillion, three hundred ninety-four billion, eight hundred nine million, three hundred ninety-two thousand, four hundred eighty".