28723801650 has 24 divisors (see below), whose sum is σ = 71235028464. Its totient is φ = 7659680400.

The previous prime is 28723801621. The next prime is 28723801663. The reversal of 28723801650 is 5610832782.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 95745856 + ... + 95746155.

It is an arithmetic number, because the mean of its divisors is an integer number (2968126186).

Almost surely, 2^28723801650 is an apocalyptic number.

28723801650 is an abundant number, since it is smaller than the sum of its proper divisors (42511226814).

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

28723801650 is a wasteful number, since it uses less digits than its factorization.

28723801650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191492026 (or 191492021 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 28723801650 in words is "twenty-eight billion, seven hundred twenty-three million, eight hundred one thousand, six hundred fifty".