28651745344 has 28 divisors (see below), whose sum is σ = 56874664000. Its totient is φ = 14321121408.

The previous prime is 28651745183. The next prime is 28651745363. The reversal of 28651745344 is 44354715682.

It is a super-2 number, since 2×28651745344² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124357 + ... + 269755.

It is an arithmetic number, because the mean of its divisors is an integer number (2031238000).

Almost surely, 2^28651745344 is an apocalyptic number.

It is an amenable number.

28651745344 is a deficient number, since it is larger than the sum of its proper divisors (28222918656).

28651745344 is a wasteful number, since it uses less digits than its factorization.

28651745344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148490 (or 148480 counting only the distinct ones).

The product of its digits is 3225600, while the sum is 49.

The spelling of 28651745344 in words is "twenty-eight billion, six hundred fifty-one million, seven hundred forty-five thousand, three hundred forty-four".