28267782833 has 4 divisors (see below), whose sum is σ = 28415781888. Its totient is φ = 28119783780.

The previous prime is 28267782821. The next prime is 28267782911. The reversal of 28267782833 is 33828776282.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28267782833 - 2¹⁶ = 28267717297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28267182833) 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, 73999241 + ... + 73999622.

It is an arithmetic number, because the mean of its divisors is an integer number (7103945472).

Almost surely, 2^28267782833 is an apocalyptic number.

It is an amenable number.

28267782833 is a deficient number, since it is larger than the sum of its proper divisors (147999055).

28267782833 is a wasteful number, since it uses less digits than its factorization.

28267782833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147999054.

The product of its digits is 10838016, while the sum is 56.

The spelling of 28267782833 in words is "twenty-eight billion, two hundred sixty-seven million, seven hundred eighty-two thousand, eight hundred thirty-three".