28684380746 has 16 divisors (see below), whose sum is σ = 50316788544. Its totient is φ = 12007414944.

The previous prime is 28684380727. The next prime is 28684380749. The reversal of 28684380746 is 64708348682.

It is a junction number, because it is equal to n+sod(n) for n = 28684380691 and 28684380700.

It is not an unprimeable number, because it can be changed into a prime (28684380749) 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 7 ways as a sum of consecutive naturals, for example, 23823635 + ... + 23824838.

It is an arithmetic number, because the mean of its divisors is an integer number (3144799284).

Almost surely, 2^28684380746 is an apocalyptic number.

28684380746 is a deficient number, since it is larger than the sum of its proper divisors (21632407798).

28684380746 is a wasteful number, since it uses less digits than its factorization.

28684380746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47648525.

The product of its (nonzero) digits is 12386304, while the sum is 56.

The spelling of 28684380746 in words is "twenty-eight billion, six hundred eighty-four million, three hundred eighty thousand, seven hundred forty-six".