28122394178 has 8 divisors (see below), whose sum is σ = 42184632720. Its totient is φ = 14060849940.

The previous prime is 28122394169. The next prime is 28122394207. The reversal of 28122394178 is 87149322182.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56528 + ... + 243803.

It is an arithmetic number, because the mean of its divisors is an integer number (5273079090).

Almost surely, 2^28122394178 is an apocalyptic number.

28122394178 is a deficient number, since it is larger than the sum of its proper divisors (14062238542).

28122394178 is a wasteful number, since it uses less digits than its factorization.

28122394178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347152.

The product of its digits is 387072, while the sum is 47.

The spelling of 28122394178 in words is "twenty-eight billion, one hundred twenty-two million, three hundred ninety-four thousand, one hundred seventy-eight".