28771467238 has 8 divisors (see below), whose sum is σ = 43157930040. Its totient is φ = 14385490560.

The previous prime is 28771467187. The next prime is 28771467239. The reversal of 28771467238 is 83276417782.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28771467239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133318 + ... + 274438.

It is an arithmetic number, because the mean of its divisors is an integer number (5394741255).

Almost surely, 2^28771467238 is an apocalyptic number.

28771467238 is a deficient number, since it is larger than the sum of its proper divisors (14386462802).

28771467238 is a wasteful number, since it uses less digits than its factorization.

28771467238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243062.

The product of its digits is 6322176, while the sum is 55.

The spelling of 28771467238 in words is "twenty-eight billion, seven hundred seventy-one million, four hundred sixty-seven thousand, two hundred thirty-eight".