28580918008 has 8 divisors (see below), whose sum is σ = 53589221280. Its totient is φ = 14290459000.

The previous prime is 28580917999. The next prime is 28580918021. The reversal of 28580918008 is 80081908582.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1786307368 + ... + 1786307383.

It is an arithmetic number, because the mean of its divisors is an integer number (6698652660).

Almost surely, 2^28580918008 is an apocalyptic number.

It is an amenable number.

28580918008 is a deficient number, since it is larger than the sum of its proper divisors (25008303272).

28580918008 is a wasteful number, since it uses less digits than its factorization.

28580918008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572614757 (or 3572614753 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 49.

The spelling of 28580918008 in words is "twenty-eight billion, five hundred eighty million, nine hundred eighteen thousand, eight".