28287573434 has 8 divisors (see below), whose sum is σ = 42651212340. Its totient is φ = 14070502656.

The previous prime is 28287573427. The next prime is 28287573437. The reversal of 28287573434 is 43437578282.

It can be written as a sum of positive squares in 2 ways, for example, as 27837921409 + 449652025 = 166847^2 + 21205^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28287573437) 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, 36641549 + ... + 36642320.

Almost surely, 2^28287573434 is an apocalyptic number.

28287573434 is a deficient number, since it is larger than the sum of its proper divisors (14363638906).

28287573434 is a wasteful number, since it uses less digits than its factorization.

28287573434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73284064.

The product of its digits is 9031680, while the sum is 53.

The spelling of 28287573434 in words is "twenty-eight billion, two hundred eighty-seven million, five hundred seventy-three thousand, four hundred thirty-four".