28502903855 has 4 divisors (see below), whose sum is σ = 34203484632. Its totient is φ = 22802323080.

The previous prime is 28502903843. The next prime is 28502903873. The reversal of 28502903855 is 55830920582.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 28502903855 - 2¹⁶ = 28502838319 is a prime.

It is a super-2 number, since 2×28502903855² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2850290381 + ... + 2850290390.

It is an arithmetic number, because the mean of its divisors is an integer number (8550871158).

Almost surely, 2^28502903855 is an apocalyptic number.

28502903855 is a deficient number, since it is larger than the sum of its proper divisors (5700580777).

28502903855 is an equidigital number, since it uses as much as digits as its factorization.

28502903855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5700580776.

The product of its (nonzero) digits is 864000, while the sum is 47.

The spelling of 28502903855 in words is "twenty-eight billion, five hundred two million, nine hundred three thousand, eight hundred fifty-five".