27247140 has 144 divisors (see below), whose sum is σ = 90155520. Its totient is φ = 6635520.

The previous prime is 27247139. The next prime is 27247147. The reversal of 27247140 is 4174272.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27247147) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 105892 + ... + 106148.

It is an arithmetic number, because the mean of its divisors is an integer number (626080).

Almost surely, 2^27247140 is an apocalyptic number.

27247140 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 27247140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45077760).

27247140 is an abundant number, since it is smaller than the sum of its proper divisors (62908380).

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

27247140 is a wasteful number, since it uses less digits than its factorization.

27247140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 27247140 is about 5219.8793089496. The cubic root of 27247140 is about 300.9125546654.

The spelling of 27247140 in words is "twenty-seven million, two hundred forty-seven thousand, one hundred forty".