28389879752301 has 20 divisors (see below), whose sum is σ = 43871972545500. Its totient is φ = 18273945586176.

The previous prime is 28389879752261. The next prime is 28389879752309. The reversal of 28389879752301 is 10325797898382.

28389879752301 is a `hidden beast` number, since 2 + 8 + 3 + 8 + 9 + 8 + 7 + 97 + 523 + 0 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10018326450276 + 18371553302025 = 3165174^2 + 4286205^2 .

It is not a de Polignac number, because 28389879752301 - 2⁹ = 28389879751789 is a prime.

It is a super-2 number, since 2×28389879752301² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28389879752301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28389879752309) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6042969076 + ... + 6042973773.

It is an arithmetic number, because the mean of its divisors is an integer number (2193598627275).

Almost surely, 2^{28389879752301} is an apocalyptic number.

It is an amenable number.

28389879752301 is a deficient number, since it is larger than the sum of its proper divisors (15482092793199).

28389879752301 is a wasteful number, since it uses less digits than its factorization.

28389879752301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12085942890 (or 12085942881 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 72.

The spelling of 28389879752301 in words is "twenty-eight trillion, three hundred eighty-nine billion, eight hundred seventy-nine million, seven hundred fifty-two thousand, three hundred one".