28639257303 has 16 divisors (see below), whose sum is σ = 38633214816. Its totient is φ = 18869750400.

The previous prime is 28639257299. The next prime is 28639257359. The reversal of 28639257303 is 30375293682.

It is not a de Polignac number, because 28639257303 - 2² = 28639257299 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28639257103) 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 15 ways as a sum of consecutive naturals, for example, 83925 + ... + 253617.

It is an arithmetic number, because the mean of its divisors is an integer number (2414575926).

Almost surely, 2^28639257303 is an apocalyptic number.

28639257303 is a deficient number, since it is larger than the sum of its proper divisors (9993957513).

28639257303 is a wasteful number, since it uses less digits than its factorization.

28639257303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170354.

The product of its (nonzero) digits is 1632960, while the sum is 48.

The spelling of 28639257303 in words is "twenty-eight billion, six hundred thirty-nine million, two hundred fifty-seven thousand, three hundred three".