270840 has 64 divisors (see below), whose sum is σ = 848160. Its totient is φ = 69120.

The previous prime is 270833. The next prime is 270841. The reversal of 270840 is 48072.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (270841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4410 + ... + 4470.

2²⁷⁰⁸⁴⁰ is an apocalyptic number.

270840 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 270840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424080).

270840 is an abundant number, since it is smaller than the sum of its proper divisors (577320).

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

270840 is a wasteful number, since it uses less digits than its factorization.

270840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 270840 is about 520.4229049533. The cubic root of 270840 is about 64.6999981685.

The spelling of 270840 in words is "two hundred seventy thousand, eight hundred forty".