28603878857 has 8 divisors (see below), whose sum is σ = 28705896960. Its totient is φ = 28501925760.

The previous prime is 28603878851. The next prime is 28603878893. The reversal of 28603878857 is 75887830682.

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 28603878857 - 2⁴ = 28603878841 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28603878857.

It is not an unprimeable number, because it can be changed into a prime (28603878851) 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, 971048 + ... + 1000070.

It is an arithmetic number, because the mean of its divisors is an integer number (3588237120).

Almost surely, 2^28603878857 is an apocalyptic number.

It is an amenable number.

28603878857 is a deficient number, since it is larger than the sum of its proper divisors (102018103).

28603878857 is a wasteful number, since it uses less digits than its factorization.

28603878857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32503.

The product of its (nonzero) digits is 36126720, while the sum is 62.

The spelling of 28603878857 in words is "twenty-eight billion, six hundred three million, eight hundred seventy-eight thousand, eight hundred fifty-seven".