28066724448 has 96 divisors (see below), whose sum is σ = 86916372480. Its totient is φ = 7760378880.

The previous prime is 28066724419. The next prime is 28066724449. The reversal of 28066724448 is 84442766082.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 28066724448.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28066724449) 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, 652813 + ... + 694476.

It is an arithmetic number, because the mean of its divisors is an integer number (905378880).

Almost surely, 2^28066724448 is an apocalyptic number.

28066724448 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

28066724448 is an abundant number, since it is smaller than the sum of its proper divisors (58849648032).

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

28066724448 is a wasteful number, since it uses less digits than its factorization.

28066724448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347340 (or 1347332 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 51.

The spelling of 28066724448 in words is "twenty-eight billion, sixty-six million, seven hundred twenty-four thousand, four hundred forty-eight".