28344798737280 has 160 divisors (see below), whose sum is σ = 101224394286840. Its totient is φ = 7558612982784.

The previous prime is 28344798737221. The next prime is 28344798737293. The reversal of 28344798737280 is 8273789744382.

It is a happy number.

28344798737280 is a `hidden beast` number, since 2 + 8 + 3 + 4 + 479 + 8 + 7 + 3 + 72 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 28344798737199 and 28344798737208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 273335494 + ... + 273439173.

Almost surely, 2^{28344798737280} is an apocalyptic number.

28344798737280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28344798737280 is an abundant number, since it is smaller than the sum of its proper divisors (72879595549560).

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

28344798737280 is an equidigital number, since it uses as much as digits as its factorization.

28344798737280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546774698 (or 546774677 counting only the distinct ones).

The product of its (nonzero) digits is 910393344, while the sum is 72.

The spelling of 28344798737280 in words is "twenty-eight trillion, three hundred forty-four billion, seven hundred ninety-eight million, seven hundred thirty-seven thousand, two hundred eighty".