27861340 has 36 divisors (see below), whose sum is σ = 63363384. Its totient is φ = 10286016.

The previous prime is 27861313. The next prime is 27861367. The reversal of 27861340 is 4316872.

It is an interprime number because it is at equal distance from previous prime (27861313) and next prime (27861367).

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 742 + ... + 7501.

It is an arithmetic number, because the mean of its divisors is an integer number (1760094).

Almost surely, 2^27861340 is an apocalyptic number.

27861340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27861340 is an abundant number, since it is smaller than the sum of its proper divisors (35502044).

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

27861340 is a wasteful number, since it uses less digits than its factorization.

27861340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8278 (or 8263 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 27861340 is about 5278.3842224681. The cubic root of 27861340 is about 303.1568133968.

The spelling of 27861340 in words is "twenty-seven million, eight hundred sixty-one thousand, three hundred forty".