2706240 has 56 divisors (see below), whose sum is σ = 8595360. Its totient is φ = 721408.

The previous prime is 2706211. The next prime is 2706241. The reversal of 2706240 is 426072.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2706241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450 + ... + 2369.

2^2706240 is an apocalyptic number.

2706240 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 2706240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4297680).

2706240 is an abundant number, since it is smaller than the sum of its proper divisors (5889120).

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

2706240 is a wasteful number, since it uses less digits than its factorization.

2706240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2839 (or 2829 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 2706240 is about 1645.0653482461. The cubic root of 2706240 is about 139.3548547502.

The spelling of 2706240 in words is "two million, seven hundred six thousand, two hundred forty".