28051650628 has 12 divisors (see below), whose sum is σ = 49364637840. Its totient is φ = 13947468392.

The previous prime is 28051650607. The next prime is 28051650629. The reversal of 28051650628 is 82605615082.

It is not an unprimeable number, because it can be changed into a prime (28051650629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19588426 + ... + 19589857.

It is an arithmetic number, because the mean of its divisors is an integer number (4113719820).

Almost surely, 2^28051650628 is an apocalyptic number.

It is an amenable number.

28051650628 is a deficient number, since it is larger than the sum of its proper divisors (21312987212).

28051650628 is a wasteful number, since it uses less digits than its factorization.

28051650628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39178466 (or 39178464 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The spelling of 28051650628 in words is "twenty-eight billion, fifty-one million, six hundred fifty thousand, six hundred twenty-eight".