28287367534 has 4 divisors (see below), whose sum is σ = 42431051304. Its totient is φ = 14143683766.

The previous prime is 28287367519. The next prime is 28287367553. The reversal of 28287367534 is 43576378282.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7071841882 + ... + 7071841885.

It is an arithmetic number, because the mean of its divisors is an integer number (10607762826).

Almost surely, 2^28287367534 is an apocalyptic number.

28287367534 is a deficient number, since it is larger than the sum of its proper divisors (14143683770).

28287367534 is a wasteful number, since it uses less digits than its factorization.

28287367534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14143683769.

The product of its digits is 13547520, while the sum is 55.

The spelling of 28287367534 in words is "twenty-eight billion, two hundred eighty-seven million, three hundred sixty-seven thousand, five hundred thirty-four".