28267631071 has 4 divisors (see below), whose sum is σ = 29242377000. Its totient is φ = 27292885144.

The previous prime is 28267631039. The next prime is 28267631131. The reversal of 28267631071 is 17013676282.

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 28267631071 - 2⁵ = 28267631039 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 (28267631011) 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, 487372921 + ... + 487372978.

It is an arithmetic number, because the mean of its divisors is an integer number (7310594250).

Almost surely, 2^28267631071 is an apocalyptic number.

28267631071 is a deficient number, since it is larger than the sum of its proper divisors (974745929).

28267631071 is an equidigital number, since it uses as much as digits as its factorization.

28267631071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974745928.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 28267631071 in words is "twenty-eight billion, two hundred sixty-seven million, six hundred thirty-one thousand, seventy-one".