28988858770 has 16 divisors (see below), whose sum is σ = 52199588160. Its totient is φ = 11591178544.

The previous prime is 28988858737. The next prime is 28988858783. The reversal of 28988858770 is 7785888982.

It is a self number, because there is not a number n which added to its sum of digits gives 28988858770.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 517660 + ... + 570919.

It is an arithmetic number, because the mean of its divisors is an integer number (3262474260).

Almost surely, 2^28988858770 is an apocalyptic number.

28988858770 is a deficient number, since it is larger than the sum of its proper divisors (23210729390).

28988858770 is a wasteful number, since it uses less digits than its factorization.

28988858770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091249.

The product of its (nonzero) digits is 144506880, while the sum is 70.

The spelling of 28988858770 in words is "twenty-eight billion, nine hundred eighty-eight million, eight hundred fifty-eight thousand, seven hundred seventy".