28774414433 has 4 divisors (see below), whose sum is σ = 28852819200. Its totient is φ = 28696009668.

The previous prime is 28774414391. The next prime is 28774414483. The reversal of 28774414433 is 33441447782.

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 28774414433 - 2⁸ = 28774414177 is a prime.

It is a super-2 number, since 2×28774414433² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28774414483) 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, 39201833 + ... + 39202566.

It is an arithmetic number, because the mean of its divisors is an integer number (7213204800).

Almost surely, 2^28774414433 is an apocalyptic number.

It is an amenable number.

28774414433 is a deficient number, since it is larger than the sum of its proper divisors (78404767).

28774414433 is an equidigital number, since it uses as much as digits as its factorization.

28774414433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78404766.

The product of its digits is 1806336, while the sum is 47.

The spelling of 28774414433 in words is "twenty-eight billion, seven hundred seventy-four million, four hundred fourteen thousand, four hundred thirty-three".