28541556344 has 64 divisors (see below), whose sum is σ = 64476172800. Its totient is φ = 11570891904.

The previous prime is 28541556331. The next prime is 28541556347. The reversal of 28541556344 is 44365514582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28541556347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 700517 + ... + 740139.

It is an arithmetic number, because the mean of its divisors is an integer number (1007440200).

Almost surely, 2^28541556344 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 28541556344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32238086400).

28541556344 is an abundant number, since it is smaller than the sum of its proper divisors (35934616456).

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

28541556344 is a wasteful number, since it uses less digits than its factorization.

28541556344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40332 (or 40328 counting only the distinct ones).

The product of its digits is 2304000, while the sum is 47.

The spelling of 28541556344 in words is "twenty-eight billion, five hundred forty-one million, five hundred fifty-six thousand, three hundred forty-four".