28133895290 has 8 divisors (see below), whose sum is σ = 50641011540. Its totient is φ = 11253558112.

The previous prime is 28133895281. The next prime is 28133895379. The reversal of 28133895290 is 9259833182.

28133895290 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 22948311169 + 5185584121 = 151487^2 + 72011^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1406694755 + ... + 1406694774.

Almost surely, 2^28133895290 is an apocalyptic number.

28133895290 is a deficient number, since it is larger than the sum of its proper divisors (22507116250).

28133895290 is a wasteful number, since it uses less digits than its factorization.

28133895290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2813389536.

The product of its (nonzero) digits is 933120, while the sum is 50.

The spelling of 28133895290 in words is "twenty-eight billion, one hundred thirty-three million, eight hundred ninety-five thousand, two hundred ninety".