28420060033 has 4 divisors (see below), whose sum is σ = 28701446868. Its totient is φ = 28138673200.

The previous prime is 28420060007. The next prime is 28420060091. The reversal of 28420060033 is 33006002482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19305157249 + 9114902784 = 138943^2 + 95472^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28420060033 is a prime.

It is a super-2 number, since 2×28420060033² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28420059983 and 28420060010.

It is not an unprimeable number, because it can be changed into a prime (28400060033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140693266 + ... + 140693467.

It is an arithmetic number, because the mean of its divisors is an integer number (7175361717).

Almost surely, 2^28420060033 is an apocalyptic number.

It is an amenable number.

28420060033 is a deficient number, since it is larger than the sum of its proper divisors (281386835).

28420060033 is a wasteful number, since it uses less digits than its factorization.

28420060033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281386834.

The product of its (nonzero) digits is 6912, while the sum is 28.

The spelling of 28420060033 in words is "twenty-eight billion, four hundred twenty million, sixty thousand, thirty-three".