27555040 has 24 divisors (see below), whose sum is σ = 65099160. Its totient is φ = 11021952.

The previous prime is 27555013. The next prime is 27555041. The reversal of 27555040 is 4055572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27555041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85950 + ... + 86269.

It is an arithmetic number, because the mean of its divisors is an integer number (2712465).

Almost surely, 2^27555040 is an apocalyptic number.

27555040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27555040 is an abundant number, since it is smaller than the sum of its proper divisors (37544120).

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

27555040 is a wasteful number, since it uses less digits than its factorization.

27555040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172234 (or 172226 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 27555040 is about 5249.2894757291. The cubic root of 27555040 is about 302.0417760140.

The spelling of 27555040 in words is "twenty-seven million, five hundred fifty-five thousand, forty".