28491882050 has 12 divisors (see below), whose sum is σ = 52994900706. Its totient is φ = 11396752800.

The previous prime is 28491882049. The next prime is 28491882059. The reversal of 28491882050 is 5028819482.

It can be written as a sum of positive squares in 3 ways, for example, as 27351536689 + 1140345361 = 165383^2 + 33769^2 .

It is a super-2 number, since 2×28491882050² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28491881986 and 28491882004.

It is not an unprimeable number, because it can be changed into a prime (28491882059) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 284918771 + ... + 284918870.

Almost surely, 2^28491882050 is an apocalyptic number.

28491882050 is a deficient number, since it is larger than the sum of its proper divisors (24503018656).

28491882050 is a wasteful number, since it uses less digits than its factorization.

28491882050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569837653 (or 569837648 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 47.

The spelling of 28491882050 in words is "twenty-eight billion, four hundred ninety-one million, eight hundred eighty-two thousand, fifty".