28131677534 has 8 divisors (see below), whose sum is σ = 43652603160. Its totient is φ = 13580809816.

The previous prime is 28131677521. The next prime is 28131677579. The reversal of 28131677534 is 43577613182.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242514404 + ... + 242514519.

It is an arithmetic number, because the mean of its divisors is an integer number (5456575395).

Almost surely, 2^28131677534 is an apocalyptic number.

28131677534 is a deficient number, since it is larger than the sum of its proper divisors (15520925626).

28131677534 is a wasteful number, since it uses less digits than its factorization.

28131677534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485028954.

The product of its digits is 846720, while the sum is 47.

The spelling of 28131677534 in words is "twenty-eight billion, one hundred thirty-one million, six hundred seventy-seven thousand, five hundred thirty-four".