27281859920 has 40 divisors (see below), whose sum is σ = 72491800704. Its totient is φ = 9353780352.

The previous prime is 27281859911. The next prime is 27281859953. The reversal of 27281859920 is 2995818272.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent 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, 24358244 + ... + 24359363.

Almost surely, 2^27281859920 is an apocalyptic number.

27281859920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27281859920 is an abundant number, since it is smaller than the sum of its proper divisors (45209940784).

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

27281859920 is a wasteful number, since it uses less digits than its factorization.

27281859920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48717627 (or 48717621 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 53.

The spelling of 27281859920 in words is "twenty-seven billion, two hundred eighty-one million, eight hundred fifty-nine thousand, nine hundred twenty".