28968189450 has 48 divisors (see below), whose sum is σ = 75622228320. Its totient is φ = 7318278720.

The previous prime is 28968189433. The next prime is 28968189491. The reversal of 28968189450 is 5498186982.

It is a super-2 number, since 2×28968189450² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5079289 + ... + 5084988.

It is an arithmetic number, because the mean of its divisors is an integer number (1575463090).

Almost surely, 2^28968189450 is an apocalyptic number.

28968189450 is an abundant number, since it is smaller than the sum of its proper divisors (46654038870).

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

28968189450 is a wasteful number, since it uses less digits than its factorization.

28968189450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10164311 (or 10164306 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 60.

The spelling of 28968189450 in words is "twenty-eight billion, nine hundred sixty-eight million, one hundred eighty-nine thousand, four hundred fifty".