28044665286 has 32 divisors (see below), whose sum is σ = 61233515136. Its totient is φ = 8492112000.

The previous prime is 28044665219. The next prime is 28044665291. The reversal of 28044665286 is 68256644082.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66280 + ... + 245931.

It is an arithmetic number, because the mean of its divisors is an integer number (1913547348).

Almost surely, 2^28044665286 is an apocalyptic number.

28044665286 is an abundant number, since it is smaller than the sum of its proper divisors (33188849850).

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

28044665286 is a wasteful number, since it uses less digits than its factorization.

28044665286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 313588.

The product of its (nonzero) digits is 4423680, while the sum is 51.

The spelling of 28044665286 in words is "twenty-eight billion, forty-four million, six hundred sixty-five thousand, two hundred eighty-six".