27780305252 has 24 divisors (see below), whose sum is σ = 55567960896. Its totient is φ = 11904270048.

The previous prime is 27780305243. The next prime is 27780305263. The reversal of 27780305252 is 25250308772.

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, 163883 + ... + 287085.

It is an arithmetic number, because the mean of its divisors is an integer number (2315331704).

Almost surely, 2^27780305252 is an apocalyptic number.

It is an amenable number.

27780305252 is an abundant number, since it is smaller than the sum of its proper divisors (27787655644).

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

27780305252 is a wasteful number, since it uses less digits than its factorization.

27780305252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131267 (or 131265 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 41.

The spelling of 27780305252 in words is "twenty-seven billion, seven hundred eighty million, three hundred five thousand, two hundred fifty-two".