28857403007 has 8 divisors (see below), whose sum is σ = 29640878256. Its totient is φ = 28074114432.

The previous prime is 28857402991. The next prime is 28857403021. The reversal of 28857403007 is 70030475882.

It is a happy number.

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 28857403007 - 2⁴ = 28857402991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28857403037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301463 + ... + 385479.

It is an arithmetic number, because the mean of its divisors is an integer number (3705109782).

Almost surely, 2^28857403007 is an apocalyptic number.

28857403007 is a deficient number, since it is larger than the sum of its proper divisors (783475249).

28857403007 is an equidigital number, since it uses as much as digits as its factorization.

28857403007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93337.

The product of its (nonzero) digits is 376320, while the sum is 44.

Adding to 28857403007 its reverse (70030475882), we get a palindrome (98887878889).

The spelling of 28857403007 in words is "twenty-eight billion, eight hundred fifty-seven million, four hundred three thousand, seven".