27389340 has 240 divisors, whose sum is σ = 98794080. Its totient is φ = 6289920.

The previous prime is 27389339. The next prime is 27389357. The reversal of 27389340 is 4398372.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 27389295 and 27389304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 516754 + ... + 516806.

It is an arithmetic number, because the mean of its divisors is an integer number (411642).

Almost surely, 2^27389340 is an apocalyptic number.

27389340 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 27389340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49397040).

27389340 is an abundant number, since it is smaller than the sum of its proper divisors (71404740).

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

27389340 is a wasteful number, since it uses less digits than its factorization.

27389340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 27389340 is about 5233.4825881052. The cubic root of 27389340 is about 301.4351237852.

The spelling of 27389340 in words is "twenty-seven million, three hundred eighty-nine thousand, three hundred forty".