27105240 has 64 divisors (see below), whose sum is σ = 82114560. Its totient is φ = 7157120.

The previous prime is 27105233. The next prime is 27105251. The reversal of 27105240 is 4250172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11785 + ... + 13895.

It is an arithmetic number, because the mean of its divisors is an integer number (1283040).

Almost surely, 2^27105240 is an apocalyptic number.

27105240 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 27105240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41057280).

27105240 is an abundant number, since it is smaller than the sum of its proper divisors (55009320).

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

27105240 is a wasteful number, since it uses less digits than its factorization.

27105240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2232 (or 2228 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 27105240 is about 5206.2692976833. The cubic root of 27105240 is about 300.3892724492.

The spelling of 27105240 in words is "twenty-seven million, one hundred five thousand, two hundred forty".