28631227009 has 16 divisors (see below), whose sum is σ = 35865271296. Its totient is φ = 22204299600.

The previous prime is 28631226989. The next prime is 28631227139. The reversal of 28631227009 is 90072213682.

It is not a de Polignac number, because 28631227009 - 2⁹ = 28631226497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28631224009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 864877 + ... + 897370.

It is an arithmetic number, because the mean of its divisors is an integer number (2241579456).

Almost surely, 2^28631227009 is an apocalyptic number.

It is an amenable number.

28631227009 is a deficient number, since it is larger than the sum of its proper divisors (7234044287).

28631227009 is a wasteful number, since it uses less digits than its factorization.

28631227009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1762476.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 28631227009 in words is "twenty-eight billion, six hundred thirty-one million, two hundred twenty-seven thousand, nine".