28287162311 has 4 divisors (see below), whose sum is σ = 28766605800. Its totient is φ = 27807718824.

The previous prime is 28287162307. The next prime is 28287162313. The reversal of 28287162311 is 11326178282.

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

It is a cyclic number.

It is not a de Polignac number, because 28287162311 - 2² = 28287162307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28287162313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239721656 + ... + 239721773.

It is an arithmetic number, because the mean of its divisors is an integer number (7191651450).

Almost surely, 2^28287162311 is an apocalyptic number.

28287162311 is a deficient number, since it is larger than the sum of its proper divisors (479443489).

28287162311 is an equidigital number, since it uses as much as digits as its factorization.

28287162311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479443488.

The product of its digits is 64512, while the sum is 41.

The spelling of 28287162311 in words is "twenty-eight billion, two hundred eighty-seven million, one hundred sixty-two thousand, three hundred eleven".