28055255020 has 24 divisors (see below), whose sum is σ = 63448038864. Its totient is φ = 10358863296.

The previous prime is 28055255003. The next prime is 28055255047. The reversal of 28055255020 is 2055255082.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53952154 + ... + 53952673.

It is an arithmetic number, because the mean of its divisors is an integer number (2643668286).

Almost surely, 2^28055255020 is an apocalyptic number.

28055255020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28055255020 is an abundant number, since it is smaller than the sum of its proper divisors (35392783844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28055255020 is a wasteful number, since it uses less digits than its factorization.

28055255020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107904849 (or 107904847 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 34.

The spelling of 28055255020 in words is "twenty-eight billion, fifty-five million, two hundred fifty-five thousand, twenty".