28745018813 has 48 divisors (see below), whose sum is σ = 35929261440. Its totient is φ = 22861440000.

The previous prime is 28745018791. The next prime is 28745018849. The reversal of 28745018813 is 31881054782.

It is not a de Polignac number, because 28745018813 - 2²² = 28740824509 is a prime.

It is a super-2 number, since 2×28745018813² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28745018513) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10261013 + ... + 10263813.

It is an arithmetic number, because the mean of its divisors is an integer number (748526280).

Almost surely, 2^28745018813 is an apocalyptic number.

It is an amenable number.

28745018813 is a deficient number, since it is larger than the sum of its proper divisors (7184242627).

28745018813 is a wasteful number, since it uses less digits than its factorization.

28745018813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058 (or 3051 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 47.

The spelling of 28745018813 in words is "twenty-eight billion, seven hundred forty-five million, eighteen thousand, eight hundred thirteen".