28885128389404 has 48 divisors (see below), whose sum is σ = 57843958491648. Its totient is φ = 12363549357888.

The previous prime is 28885128389387. The next prime is 28885128389413. The reversal of 28885128389404 is 40498382158882.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 557569767 + ... + 557621569.

It is an arithmetic number, because the mean of its divisors is an integer number (1205082468576).

Almost surely, 2^{28885128389404} is an apocalyptic number.

It is an amenable number.

28885128389404 is an abundant number, since it is smaller than the sum of its proper divisors (28958830102244).

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

28885128389404 is a wasteful number, since it uses less digits than its factorization.

28885128389404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76834 (or 76832 counting only the distinct ones).

The product of its (nonzero) digits is 283115520, while the sum is 70.

The spelling of 28885128389404 in words is "twenty-eight trillion, eight hundred eighty-five billion, one hundred twenty-eight million, three hundred eighty-nine thousand, four hundred four".