28210234656 has 48 divisors (see below), whose sum is σ = 78407862624. Its totient is φ = 8850269184.

The previous prime is 28210234631. The next prime is 28210234669. The reversal of 28210234656 is 65643201282.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8641210 + ... + 8644473.

It is an arithmetic number, because the mean of its divisors is an integer number (1633497138).

Almost surely, 2^28210234656 is an apocalyptic number.

It is an amenable number.

28210234656 is an abundant number, since it is smaller than the sum of its proper divisors (50197627968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28210234656 is a wasteful number, since it uses less digits than its factorization.

28210234656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17285713 (or 17285705 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 28210234656 in words is "twenty-eight billion, two hundred ten million, two hundred thirty-four thousand, six hundred fifty-six".