28004849324281 has 8 divisors (see below), whose sum is σ = 28614073442760. Its totient is φ = 27398618936832.

The previous prime is 28004849324233. The next prime is 28004849324303. The reversal of 28004849324281 is 18242394840082.

It can be written as a sum of positive squares in 4 ways, for example, as 241002446400 + 27763846877881 = 490920^2 + 5269141^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28004849324281 - 2³⁹ = 27455093510393 is a prime.

It is a super-2 number, since 2×28004849324281² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28004849324381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748413846 + ... + 748451263.

It is an arithmetic number, because the mean of its divisors is an integer number (3576759180345).

Almost surely, 2^{28004849324281} is an apocalyptic number.

It is an amenable number.

28004849324281 is a deficient number, since it is larger than the sum of its proper divisors (609224118479).

28004849324281 is a wasteful number, since it uses less digits than its factorization.

28004849324281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1496865515.

The product of its (nonzero) digits is 7077888, while the sum is 55.

The spelling of 28004849324281 in words is "twenty-eight trillion, four billion, eight hundred forty-nine million, three hundred twenty-four thousand, two hundred eighty-one".