28605717146 has 4 divisors (see below), whose sum is σ = 42908575722. Its totient is φ = 14302858572.

The previous prime is 28605717137. The next prime is 28605717209. The reversal of 28605717146 is 64171750682.

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., 24446886025 + 4158831121 = 156355^2 + 64489^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28605717146.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7151429285 + ... + 7151429288.

Almost surely, 2^28605717146 is an apocalyptic number.

28605717146 is a deficient number, since it is larger than the sum of its proper divisors (14302858576).

28605717146 is a wasteful number, since it uses less digits than its factorization.

28605717146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14302858575.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 28605717146 in words is "twenty-eight billion, six hundred five million, seven hundred seventeen thousand, one hundred forty-six".