28460485538 has 4 divisors (see below), whose sum is σ = 42690728310. Its totient is φ = 14230242768.

The previous prime is 28460485531. The next prime is 28460485577. The reversal of 28460485538 is 83558406482.

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., 23782883089 + 4677602449 = 154217^2 + 68393^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 28460485538.

It is not an unprimeable number, because it can be changed into a prime (28460485531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7115121383 + ... + 7115121386.

Almost surely, 2^28460485538 is an apocalyptic number.

28460485538 is a deficient number, since it is larger than the sum of its proper divisors (14230242772).

28460485538 is a wasteful number, since it uses less digits than its factorization.

28460485538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14230242771.

The product of its (nonzero) digits is 7372800, while the sum is 53.

The spelling of 28460485538 in words is "twenty-eight billion, four hundred sixty million, four hundred eighty-five thousand, five hundred thirty-eight".