28557742433 has 16 divisors (see below), whose sum is σ = 31454438400. Its totient is φ = 25711361280.

The previous prime is 28557742393. The next prime is 28557742439. The reversal of 28557742433 is 33424775582.

It is not a de Polignac number, because 28557742433 - 2²⁴ = 28540965217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28557742439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3447785 + ... + 3456057.

It is an arithmetic number, because the mean of its divisors is an integer number (1965902400).

Almost surely, 2^28557742433 is an apocalyptic number.

It is an amenable number.

28557742433 is a deficient number, since it is larger than the sum of its proper divisors (2896695967).

28557742433 is a wasteful number, since it uses less digits than its factorization.

28557742433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11272.

The product of its digits is 5644800, while the sum is 50.

The spelling of 28557742433 in words is "twenty-eight billion, five hundred fifty-seven million, seven hundred forty-two thousand, four hundred thirty-three".