28318207533 has 24 divisors (see below), whose sum is σ = 47431051584. Its totient is φ = 14710755840.

The previous prime is 28318207529. The next prime is 28318207537. The reversal of 28318207533 is 33570281382.

It is an interprime number because it is at equal distance from previous prime (28318207529) and next prime (28318207537).

It is not a de Polignac number, because 28318207533 - 2² = 28318207529 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318207537) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5569716 + ... + 5574797.

It is an arithmetic number, because the mean of its divisors is an integer number (1976293816).

Almost surely, 2^28318207533 is an apocalyptic number.

It is an amenable number.

28318207533 is a deficient number, since it is larger than the sum of its proper divisors (19112844051).

28318207533 is a wasteful number, since it uses less digits than its factorization.

28318207533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11144545 (or 11144534 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 28318207533 in words is "twenty-eight billion, three hundred eighteen million, two hundred seven thousand, five hundred thirty-three".