27813530 has 64 divisors (see below), whose sum is σ = 57024000. Its totient is φ = 9704448.

The previous prime is 27813517. The next prime is 27813563. The reversal of 27813530 is 3531872.

It is a junction number, because it is equal to n+sod(n) for n = 27813493 and 27813502.

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, 255116 + ... + 255224.

It is an arithmetic number, because the mean of its divisors is an integer number (891000).

Almost surely, 2^27813530 is an apocalyptic number.

27813530 is an abundant number, since it is smaller than the sum of its proper divisors (29210470).

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

27813530 is a wasteful number, since it uses less digits than its factorization.

27813530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 27813530 is about 5273.8534298936. The cubic root of 27813530 is about 302.9833086326.

The spelling of 27813530 in words is "twenty-seven million, eight hundred thirteen thousand, five hundred thirty".