27420240 has 80 divisors (see below), whose sum is σ = 87012288. Its totient is φ = 7139328.

The previous prime is 27420229. The next prime is 27420299. The reversal of 27420240 is 4202472.

It is a tau number, because it is divible by the number of its divisors (80).

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, 8992 + ... + 11648.

Almost surely, 2^27420240 is an apocalyptic number.

27420240 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 27420240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43506144).

27420240 is an abundant number, since it is smaller than the sum of its proper divisors (59592048).

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

27420240 is a wasteful number, since it uses less digits than its factorization.

27420240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2716 (or 2710 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 21.

The square root of 27420240 is about 5236.4339010437. The cubic root of 27420240 is about 301.5484384881.

The spelling of 27420240 in words is "twenty-seven million, four hundred twenty thousand, two hundred forty".