28360725307 has 8 divisors (see below), whose sum is σ = 29895515600. Its totient is φ = 26830147104.

The previous prime is 28360725301. The next prime is 28360725311. The reversal of 28360725307 is 70352706382.

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 28360725307 - 2⁷ = 28360725179 is a prime.

It is a super-2 number, since 2×28360725307² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28360725301) 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, 1039188 + ... + 1066129.

It is an arithmetic number, because the mean of its divisors is an integer number (3736939450).

Almost surely, 2^28360725307 is an apocalyptic number.

28360725307 is a deficient number, since it is larger than the sum of its proper divisors (1534790293).

28360725307 is a wasteful number, since it uses less digits than its factorization.

28360725307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2106045.

The product of its (nonzero) digits is 423360, while the sum is 43.

The spelling of 28360725307 in words is "twenty-eight billion, three hundred sixty million, seven hundred twenty-five thousand, three hundred seven".