28684257050 has 24 divisors (see below), whose sum is σ = 53489907900. Its totient is φ = 11444199680.

The previous prime is 28684257037. The next prime is 28684257059. The reversal of 28684257050 is 5075248682.

It can be written as a sum of positive squares in 6 ways, for example, as 10743529801 + 17940727249 = 103651^2 + 133943^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28684256986 and 28684257004.

It is not an unprimeable number, because it can be changed into a prime (28684257059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 717935 + ... + 756834.

Almost surely, 2^28684257050 is an apocalyptic number.

28684257050 is a deficient number, since it is larger than the sum of its proper divisors (24805650850).

28684257050 is a wasteful number, since it uses less digits than its factorization.

28684257050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475170 (or 1475165 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 47.

The spelling of 28684257050 in words is "twenty-eight billion, six hundred eighty-four million, two hundred fifty-seven thousand, fifty".