28597421272680 has 512 divisors, whose sum is σ = 109067575680000. Its totient is φ = 6612932358144.

The previous prime is 28597421272669. The next prime is 28597421272687. The reversal of 28597421272680 is 8627212479582.

28597421272680 is a `hidden beast` number, since 2 + 8 + 5 + 97 + 421 + 27 + 26 + 80 = 666.

It is not an unprimeable number, because it can be changed into a prime (28597421272687) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14115781 + ... + 16014059.

It is an arithmetic number, because the mean of its divisors is an integer number (213022608750).

Almost surely, 2^{28597421272680} is an apocalyptic number.

28597421272680 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 28597421272680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54533787840000).

28597421272680 is an abundant number, since it is smaller than the sum of its proper divisors (80470154407320).

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

28597421272680 is a wasteful number, since it uses less digits than its factorization.

28597421272680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898378 (or 1898368 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 63.

The spelling of 28597421272680 in words is "twenty-eight trillion, five hundred ninety-seven billion, four hundred twenty-one million, two hundred seventy-two thousand, six hundred eighty".