28811221610 has 16 divisors (see below), whose sum is σ = 52739186400. Its totient is φ = 11329158096.

The previous prime is 28811221601. The next prime is 28811221661. The reversal of 28811221610 is 1612211882.

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, 24415700 + ... + 24416879.

It is an arithmetic number, because the mean of its divisors is an integer number (3296199150).

Almost surely, 2^28811221610 is an apocalyptic number.

28811221610 is a deficient number, since it is larger than the sum of its proper divisors (23927964790).

28811221610 is a wasteful number, since it uses less digits than its factorization.

28811221610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48832645.

The product of its (nonzero) digits is 3072, while the sum is 32.

The spelling of 28811221610 in words is "twenty-eight billion, eight hundred eleven million, two hundred twenty-one thousand, six hundred ten".