28622505850 has 12 divisors (see below), whose sum is σ = 53237860974. Its totient is φ = 11449002320.

The previous prime is 28622505829. The next prime is 28622505851. The reversal of 28622505850 is 5850522682.

It can be written as a sum of positive squares in 3 ways, for example, as 19184189049 + 9438316801 = 138507^2 + 97151^2 .

It is a super-2 number, since 2×28622505850² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28622505797 and 28622505806.

It is not an unprimeable number, because it can be changed into a prime (28622505851) 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 5 ways as a sum of consecutive naturals, for example, 286225009 + ... + 286225108.

Almost surely, 2^28622505850 is an apocalyptic number.

28622505850 is a deficient number, since it is larger than the sum of its proper divisors (24615355124).

28622505850 is a wasteful number, since it uses less digits than its factorization.

28622505850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572450129 (or 572450124 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 43.

The spelling of 28622505850 in words is "twenty-eight billion, six hundred twenty-two million, five hundred five thousand, eight hundred fifty".