28280149616 has 20 divisors (see below), whose sum is σ = 56273677272. Its totient is φ = 13757910336.

The previous prime is 28280149591. The next prime is 28280149619. The reversal of 28280149616 is 61694108282.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28280149619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23884670 + ... + 23885853.

Almost surely, 2^28280149616 is an apocalyptic number.

It is an amenable number.

28280149616 is a deficient number, since it is larger than the sum of its proper divisors (27993527656).

28280149616 is a wasteful number, since it uses less digits than its factorization.

28280149616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47770568 (or 47770562 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The spelling of 28280149616 in words is "twenty-eight billion, two hundred eighty million, one hundred forty-nine thousand, six hundred sixteen".