28469400804 has 504 divisors, whose sum is σ = 89564442240. Its totient is φ = 7842127104.

The previous prime is 28469400781. The next prime is 28469400809. The reversal of 28469400804 is 40800496482.

It is a self number, because there is not a number n which added to its sum of digits gives 28469400804.

It is not an unprimeable number, because it can be changed into a prime (28469400809) by changing a digit.

It is a polite number, since it can be written in 167 ways as a sum of consecutive naturals, for example, 605731909 + ... + 605731955.

Almost surely, 2^28469400804 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 28469400804, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44782221120).

28469400804 is an abundant number, since it is smaller than the sum of its proper divisors (61095041436).

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

28469400804 is a wasteful number, since it uses less digits than its factorization.

28469400804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The spelling of 28469400804 in words is "twenty-eight billion, four hundred sixty-nine million, four hundred thousand, eight hundred four".