28151324427 has 8 divisors (see below), whose sum is σ = 37536504016. Its totient is φ = 18766847232.

The previous prime is 28151324423. The next prime is 28151324447. The reversal of 28151324427 is 72442315182.

It is a happy number.

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

It is not a de Polignac number, because 28151324427 - 2² = 28151324423 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28151324423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73618 + ... + 248439.

It is an arithmetic number, because the mean of its divisors is an integer number (4692063002).

Almost surely, 2^28151324427 is an apocalyptic number.

28151324427 is a deficient number, since it is larger than the sum of its proper divisors (9385179589).

28151324427 is a wasteful number, since it uses less digits than its factorization.

28151324427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351197.

The product of its digits is 107520, while the sum is 39.

The spelling of 28151324427 in words is "twenty-eight billion, one hundred fifty-one million, three hundred twenty-four thousand, four hundred twenty-seven".