28061597491200 has 3360 divisors, whose sum is σ = 132560703696960. Its totient is φ = 5707608883200.

The previous prime is 28061597491181. The next prime is 28061597491217. The reversal of 28061597491200 is 219479516082.

It is a happy number.

28061597491200 is a `hidden beast` number, since 2 + 8 + 0 + 6 + 1 + 597 + 49 + 1 + 2 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3360).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 43777842880 + ... + 43777843520.

It is an arithmetic number, because the mean of its divisors is an integer number (39452590386).

Almost surely, 2^{28061597491200} is an apocalyptic number.

28061597491200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28061597491200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66280351848480).

28061597491200 is an abundant number, since it is smaller than the sum of its proper divisors (104499106205760).

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

28061597491200 is a wasteful number, since it uses less digits than its factorization.

28061597491200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 28061597491200 in words is "twenty-eight trillion, sixty-one billion, five hundred ninety-seven million, four hundred ninety-one thousand, two hundred".