28247303137 has 4 divisors (see below), whose sum is σ = 29158506496. Its totient is φ = 27336099780.

The previous prime is 28247303047. The next prime is 28247303143. The reversal of 28247303137 is 73130374282.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28247303137 - 2²⁷ = 28113085409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28247303137.

It is not an unprimeable number, because it can be changed into a prime (28247303737) 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 3 ways as a sum of consecutive naturals, for example, 455601633 + ... + 455601694.

It is an arithmetic number, because the mean of its divisors is an integer number (7289626624).

Almost surely, 2^28247303137 is an apocalyptic number.

It is an amenable number.

28247303137 is a deficient number, since it is larger than the sum of its proper divisors (911203359).

28247303137 is an equidigital number, since it uses as much as digits as its factorization.

28247303137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911203358.

The product of its (nonzero) digits is 169344, while the sum is 40.

The spelling of 28247303137 in words is "twenty-eight billion, two hundred forty-seven million, three hundred three thousand, one hundred thirty-seven".