28891802898 has 64 divisors (see below), whose sum is σ = 73423376640. Its totient is φ = 8249472000.

The previous prime is 28891802881. The next prime is 28891802903. The reversal of 28891802898 is 89820819882.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 581308 + ... + 629048.

It is an arithmetic number, because the mean of its divisors is an integer number (1147240260).

Almost surely, 2^28891802898 is an apocalyptic number.

28891802898 is an abundant number, since it is smaller than the sum of its proper divisors (44531573742).

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

28891802898 is a wasteful number, since it uses less digits than its factorization.

28891802898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49360 (or 49354 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 63.

The spelling of 28891802898 in words is "twenty-eight billion, eight hundred ninety-one million, eight hundred two thousand, eight hundred ninety-eight".