27485140 has 12 divisors (see below), whose sum is σ = 57718836. Its totient is φ = 10994048.

The previous prime is 27485137. The next prime is 27485147. The reversal of 27485140 is 4158472.

It can be written as a sum of positive squares in 2 ways, for example, as 18352656 + 9132484 = 4284^2 + 3022^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27485147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 687109 + ... + 687148.

It is an arithmetic number, because the mean of its divisors is an integer number (4809903).

Almost surely, 2^27485140 is an apocalyptic number.

27485140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27485140 is an abundant number, since it is smaller than the sum of its proper divisors (30233696).

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

27485140 is a wasteful number, since it uses less digits than its factorization.

27485140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374266 (or 1374264 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 27485140 is about 5242.6272039885. The cubic root of 27485140 is about 301.7861591608.

The spelling of 27485140 in words is "twenty-seven million, four hundred eighty-five thousand, one hundred forty".