28288955900 has 18 divisors (see below), whose sum is σ = 61387034520. Its totient is φ = 11315582320.

The previous prime is 28288955899. The next prime is 28288955953. The reversal of 28288955900 is 955988282.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141444680 + ... + 141444879.

Almost surely, 2^28288955900 is an apocalyptic number.

28288955900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28288955900 is an abundant number, since it is smaller than the sum of its proper divisors (33098078620).

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

28288955900 is a wasteful number, since it uses less digits than its factorization.

28288955900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282889573 (or 282889566 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 56.

The spelling of 28288955900 in words is "twenty-eight billion, two hundred eighty-eight million, nine hundred fifty-five thousand, nine hundred".