28983602988 has 72 divisors (see below), whose sum is σ = 75724766208. Its totient is φ = 9341674848.

The previous prime is 28983602987. The next prime is 28983602993. The reversal of 28983602988 is 88920638982.

28983602988 is a `hidden beast` number, since 289 + 8 + 3 + 60 + 298 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (28983602981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37245 + ... + 243627.

It is an arithmetic number, because the mean of its divisors is an integer number (1051732864).

Almost surely, 2^28983602988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28983602988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37862383104).

28983602988 is an abundant number, since it is smaller than the sum of its proper divisors (46741163220).

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

28983602988 is a wasteful number, since it uses less digits than its factorization.

28983602988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206523 (or 206518 counting only the distinct ones).

The product of its (nonzero) digits is 23887872, while the sum is 63.

The spelling of 28983602988 in words is "twenty-eight billion, nine hundred eighty-three million, six hundred two thousand, nine hundred eighty-eight".