28356057307 has 8 divisors (see below), whose sum is σ = 30026116800. Its totient is φ = 26686226304.

The previous prime is 28356057287. The next prime is 28356057313. The reversal of 28356057307 is 70375065382.

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 28356057307 - 2⁷ = 28356057179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28356057347) 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, 243694 + ... + 340732.

It is an arithmetic number, because the mean of its divisors is an integer number (3753264600).

Almost surely, 2^28356057307 is an apocalyptic number.

28356057307 is a deficient number, since it is larger than the sum of its proper divisors (1670059493).

28356057307 is a wasteful number, since it uses less digits than its factorization.

28356057307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114245.

The product of its (nonzero) digits is 1058400, while the sum is 46.

The spelling of 28356057307 in words is "twenty-eight billion, three hundred fifty-six million, fifty-seven thousand, three hundred seven".