28098619434 has 24 divisors (see below), whose sum is σ = 60890445252. Its totient is φ = 9364652160.

The previous prime is 28098619403. The next prime is 28098619487. The reversal of 28098619434 is 43491689082.

It can be written as a sum of positive squares in 2 ways, for example, as 20293427025 + 7805192409 = 142455^2 + 88347^2 .

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 15327 + ... + 237554.

Almost surely, 2^28098619434 is an apocalyptic number.

28098619434 is an abundant number, since it is smaller than the sum of its proper divisors (32791825818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28098619434 is a wasteful number, since it uses less digits than its factorization.

28098619434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259062 (or 259059 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 54.

The spelling of 28098619434 in words is "twenty-eight billion, ninety-eight million, six hundred nineteen thousand, four hundred thirty-four".