28886467087287 has 32 divisors (see below), whose sum is σ = 45312570072000. Its totient is φ = 18124656159744.

The previous prime is 28886467087249. The next prime is 28886467087297. The reversal of 28886467087287 is 78278076468882.

It is a happy number.

28886467087287 is a `hidden beast` number, since 2 + 8 + 8 + 8 + 6 + 467 + 0 + 8 + 72 + 87 = 666.

It is not a de Polignac number, because 28886467087287 - 2¹¹ = 28886467085239 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28886467087297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54659589 + ... + 55185537.

It is an arithmetic number, because the mean of its divisors is an integer number (1416017814750).

Almost surely, 2^{28886467087287} is an apocalyptic number.

28886467087287 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

28886467087287 is a deficient number, since it is larger than the sum of its proper divisors (16426102984713).

28886467087287 is a wasteful number, since it uses less digits than its factorization.

28886467087287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645632 (or 645626 counting only the distinct ones).

The product of its (nonzero) digits is 6473908224, while the sum is 81.

The spelling of 28886467087287 in words is "twenty-eight trillion, eight hundred eighty-six billion, four hundred sixty-seven million, eighty-seven thousand, two hundred eighty-seven".