27530029980 has 96 divisors (see below), whose sum is σ = 85795879680. Its totient is φ = 7328750400.

The previous prime is 27530029979. The next prime is 27530030009. The reversal of 27530029980 is 8992003572.

27530029980 is a `hidden beast` number, since 2 + 7 + 530 + 0 + 29 + 98 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 273555 + ... + 360405.

It is an arithmetic number, because the mean of its divisors is an integer number (893707080).

Almost surely, 2^27530029980 is an apocalyptic number.

27530029980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27530029980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42897939840).

27530029980 is an abundant number, since it is smaller than the sum of its proper divisors (58265849700).

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

27530029980 is a wasteful number, since it uses less digits than its factorization.

27530029980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87456 (or 87448 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

It can be divided in two parts, 27530029 and 980, that added together give a square (27531009 = 5247²).

The spelling of 27530029980 in words is "twenty-seven billion, five hundred thirty million, twenty-nine thousand, nine hundred eighty".