28144607722 has 16 divisors (see below), whose sum is σ = 52634071872. Its totient is φ = 10965431520.

The previous prime is 28144607707. The next prime is 28144607761. The reversal of 28144607722 is 22770644182.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91378443 + ... + 91378750.

It is an arithmetic number, because the mean of its divisors is an integer number (3289629492).

Almost surely, 2^28144607722 is an apocalyptic number.

28144607722 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28144607722 is a deficient number, since it is larger than the sum of its proper divisors (24489464150).

28144607722 is a wasteful number, since it uses less digits than its factorization.

28144607722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182757213.

The product of its (nonzero) digits is 301056, while the sum is 43.

The spelling of 28144607722 in words is "twenty-eight billion, one hundred forty-four million, six hundred seven thousand, seven hundred twenty-two".