28760305642 has 4 divisors (see below), whose sum is σ = 43140458466. Its totient is φ = 14380152820.

The previous prime is 28760305549. The next prime is 28760305649. The reversal of 28760305642 is 24650306782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28003010281 + 757295361 = 167341^2 + 27519^2 .

It is not an unprimeable number, because it can be changed into a prime (28760305649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7190076409 + ... + 7190076412.

Almost surely, 2^28760305642 is an apocalyptic number.

28760305642 is a deficient number, since it is larger than the sum of its proper divisors (14380152824).

28760305642 is a wasteful number, since it uses less digits than its factorization.

28760305642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14380152823.

The product of its (nonzero) digits is 483840, while the sum is 43.

The spelling of 28760305642 in words is "twenty-eight billion, seven hundred sixty million, three hundred five thousand, six hundred forty-two".