27381240 has 128 divisors (see below), whose sum is σ = 92692800. Its totient is φ = 7278336.

The previous prime is 27381217. The next prime is 27381281. The reversal of 27381240 is 4218372.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 87324 + ... + 87636.

Almost surely, 2^27381240 is an apocalyptic number.

27381240 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 27381240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46346400).

27381240 is an abundant number, since it is smaller than the sum of its proper divisors (65311560).

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

27381240 is an equidigital number, since it uses as much as digits as its factorization.

27381240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 27381240 is about 5232.7086676023. The cubic root of 27381240 is about 301.4054058337.

The spelling of 27381240 in words is "twenty-seven million, three hundred eighty-one thousand, two hundred forty".