28033389445 has 8 divisors (see below), whose sum is σ = 33642176544. Its totient is φ = 22425305424.

The previous prime is 28033389443. The next prime is 28033389457. The reversal of 28033389445 is 54498333082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28033389445 - 2¹ = 28033389443 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28033389443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83659 + ... + 251128.

It is an arithmetic number, because the mean of its divisors is an integer number (4205272068).

Almost surely, 2^28033389445 is an apocalyptic number.

It is an amenable number.

28033389445 is a deficient number, since it is larger than the sum of its proper divisors (5608787099).

28033389445 is a wasteful number, since it uses less digits than its factorization.

28033389445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351539.

The product of its (nonzero) digits is 2488320, while the sum is 49.

The spelling of 28033389445 in words is "twenty-eight billion, thirty-three million, three hundred eighty-nine thousand, four hundred forty-five".