28360743668 has 6 divisors (see below), whose sum is σ = 49631301426. Its totient is φ = 14180371832.

The previous prime is 28360743667. The next prime is 28360743673. The reversal of 28360743668 is 86634706382.

It can be written as a sum of positive squares in only one way, i.e., 22291087204 + 6069656464 = 149302^2 + 77908^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28360743667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3545092955 + ... + 3545092962.

It is an arithmetic number, because the mean of its divisors is an integer number (8271883571).

Almost surely, 2^28360743668 is an apocalyptic number.

It is an amenable number.

28360743668 is a deficient number, since it is larger than the sum of its proper divisors (21270557758).

28360743668 is a wasteful number, since it uses less digits than its factorization.

28360743668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7090185921 (or 7090185919 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 53.

The spelling of 28360743668 in words is "twenty-eight billion, three hundred sixty million, seven hundred forty-three thousand, six hundred sixty-eight".