27420340 has 12 divisors (see below), whose sum is σ = 57582756. Its totient is φ = 10968128.

The previous prime is 27420329. The next prime is 27420343. The reversal of 27420340 is 4302472.

It can be written as a sum of positive squares in 2 ways, for example, as 12873744 + 14546596 = 3588^2 + 3814^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27420343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 685489 + ... + 685528.

It is an arithmetic number, because the mean of its divisors is an integer number (4798563).

Almost surely, 2^27420340 is an apocalyptic number.

27420340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27420340 is an abundant number, since it is smaller than the sum of its proper divisors (30162416).

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

27420340 is a wasteful number, since it uses less digits than its factorization.

27420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1371026 (or 1371024 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 27420340 is about 5236.4434495180. The cubic root of 27420340 is about 301.5488050641.

The spelling of 27420340 in words is "twenty-seven million, four hundred twenty thousand, three hundred forty".