28838395404 has 432 divisors, whose sum is σ = 95305025088. Its totient is φ = 7152178176.

The previous prime is 28838395381. The next prime is 28838395427. The reversal of 28838395404 is 40459383882.

It is an interprime number because it is at equal distance from previous prime (28838395381) and next prime (28838395427).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 430423779 + ... + 430423845.

It is an arithmetic number, because the mean of its divisors is an integer number (220613484).

Almost surely, 2^28838395404 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 28838395404, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47652512544).

28838395404 is an abundant number, since it is smaller than the sum of its proper divisors (66466629684).

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

28838395404 is a wasteful number, since it uses less digits than its factorization.

28838395404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The spelling of 28838395404 in words is "twenty-eight billion, eight hundred thirty-eight million, three hundred ninety-five thousand, four hundred four".