28333333337 has 4 divisors (see below), whose sum is σ = 28454935860. Its totient is φ = 28211730816.

The previous prime is 28333333333. The next prime is 28333333363. The reversal of 28333333337 is 73333333382.

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 8570315776 + 19763017561 = 92576^2 + 140581^2 .

It is a cyclic number.

It is not a de Polignac number, because 28333333337 - 2² = 28333333333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28333333294 and 28333333303.

It is not an unprimeable number, because it can be changed into a prime (28333333333) 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, 60800912 + ... + 60801377.

It is an arithmetic number, because the mean of its divisors is an integer number (7113733965).

Almost surely, 2^28333333337 is an apocalyptic number.

It is an amenable number.

28333333337 is a deficient number, since it is larger than the sum of its proper divisors (121602523).

28333333337 is a wasteful number, since it uses less digits than its factorization.

28333333337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121602522.

The product of its digits is 734832, while the sum is 41.

The spelling of 28333333337 in words is "twenty-eight billion, three hundred thirty-three million, three hundred thirty-three thousand, three hundred thirty-seven".