28333101493 has 4 divisors (see below), whose sum is σ = 29999754540. Its totient is φ = 26666448448.

The previous prime is 28333101479. The next prime is 28333101523. The reversal of 28333101493 is 39410133382.

It is a happy number.

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 24906521124 + 3426580369 = 157818^2 + 58537^2 .

It is a cyclic number.

It is not a de Polignac number, because 28333101493 - 2¹³ = 28333093301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28333101593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833326498 + ... + 833326531.

It is an arithmetic number, because the mean of its divisors is an integer number (7499938635).

Almost surely, 2^28333101493 is an apocalyptic number.

It is an amenable number.

28333101493 is a deficient number, since it is larger than the sum of its proper divisors (1666653047).

28333101493 is a wasteful number, since it uses less digits than its factorization.

28333101493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1666653046.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 28333101493 in words is "twenty-eight billion, three hundred thirty-three million, one hundred one thousand, four hundred ninety-three".