28888616722 has 32 divisors (see below), whose sum is σ = 53343535104. Its totient is φ = 11460517200.

The previous prime is 28888616717. The next prime is 28888616737. The reversal of 28888616722 is 22761688882.

It is a super-2 number, since 2×28888616722² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1437054 + ... + 1457017.

It is an arithmetic number, because the mean of its divisors is an integer number (1666985472).

Almost surely, 2^28888616722 is an apocalyptic number.

28888616722 is a deficient number, since it is larger than the sum of its proper divisors (24454918382).

28888616722 is a wasteful number, since it uses less digits than its factorization.

28888616722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2894134.

The product of its digits is 8257536, while the sum is 58.

The spelling of 28888616722 in words is "twenty-eight billion, eight hundred eighty-eight million, six hundred sixteen thousand, seven hundred twenty-two".