28173200842 has 8 divisors (see below), whose sum is σ = 42260800932. Its totient is φ = 14086267200.

The previous prime is 28173200837. The next prime is 28173200843. The reversal of 28173200842 is 24800237182.

It can be written as a sum of positive squares in 2 ways, for example, as 25249527801 + 2923673041 = 158901^2 + 54071^2 .

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

It is not an unprimeable number, because it can be changed into a prime (28173200843) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42409 + ... + 241132.

Almost surely, 2^28173200842 is an apocalyptic number.

28173200842 is a deficient number, since it is larger than the sum of its proper divisors (14087600090).

28173200842 is a wasteful number, since it uses less digits than its factorization.

28173200842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333224.

The product of its (nonzero) digits is 43008, while the sum is 37.

The spelling of 28173200842 in words is "twenty-eight billion, one hundred seventy-three million, two hundred thousand, eight hundred forty-two".