28893880324 has 9 divisors (see below), whose sum is σ = 50564885511. Its totient is φ = 14446770180.

The previous prime is 28893880321. The next prime is 28893880333. The reversal of 28893880324 is 42308839882.

It is a happy number.

The square root of 28893880324 is 169982.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28893880321) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 297469 + ... + 382459.

Almost surely, 2^28893880324 is an apocalyptic number.

28893880324 is the 169982-nd square number.

It is an amenable number.

28893880324 is a deficient number, since it is larger than the sum of its proper divisors (21671005187).

28893880324 is an frugal number, since it uses more digits than its factorization.

28893880324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169986 (or 84993 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 55.

The spelling of 28893880324 in words is "twenty-eight billion, eight hundred ninety-three million, eight hundred eighty thousand, three hundred twenty-four".