28031050281 has 16 divisors (see below), whose sum is σ = 40427037504. Its totient is φ = 17173881024.

The previous prime is 28031050211. The next prime is 28031050283. The reversal of 28031050281 is 18205013082.

It is not a de Polignac number, because 28031050281 - 2¹³ = 28031042089 is a prime.

It is a super-3 number, since 3×28031050281³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (28031050283) 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 15 ways as a sum of consecutive naturals, for example, 1574286 + ... + 1591991.

It is an arithmetic number, because the mean of its divisors is an integer number (2526689844).

Almost surely, 2^28031050281 is an apocalyptic number.

It is an amenable number.

28031050281 is a deficient number, since it is larger than the sum of its proper divisors (12395987223).

28031050281 is a wasteful number, since it uses less digits than its factorization.

28031050281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3166520.

The product of its (nonzero) digits is 3840, while the sum is 30.

The spelling of 28031050281 in words is "twenty-eight billion, thirty-one million, fifty thousand, two hundred eighty-one".