28871857603 has 8 divisors (see below), whose sum is σ = 28921743360. Its totient is φ = 28822006920.

The previous prime is 28871857589. The next prime is 28871857631. The reversal of 28871857603 is 30675817882.

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 28871857603 - 2¹⁷ = 28871726531 is a prime.

It is a super-2 number, since 2×28871857603² (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 (28871857633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2032038 + ... + 2046196.

It is an arithmetic number, because the mean of its divisors is an integer number (3615217920).

Almost surely, 2^28871857603 is an apocalyptic number.

28871857603 is a deficient number, since it is larger than the sum of its proper divisors (49885757).

28871857603 is a wasteful number, since it uses less digits than its factorization.

28871857603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17537.

The product of its (nonzero) digits is 4515840, while the sum is 55.

The spelling of 28871857603 in words is "twenty-eight billion, eight hundred seventy-one million, eight hundred fifty-seven thousand, six hundred three".