2729240 has 48 divisors (see below), whose sum is σ = 6434640. Its totient is φ = 1041600.

The previous prime is 2729239. The next prime is 2729261. The reversal of 2729240 is 429272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38405 + ... + 38475.

It is an arithmetic number, because the mean of its divisors is an integer number (134055).

2^2729240 is an apocalyptic number.

2729240 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 2729240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3217320).

2729240 is an abundant number, since it is smaller than the sum of its proper divisors (3705400).

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

2729240 is a wasteful number, since it uses less digits than its factorization.

2729240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 109 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2729240 is about 1652.0411617148. The cubic root of 2729240 is about 139.7485281617.

Subtracting from 2729240 its reverse (429272), we obtain a cube (2299968 = 132³).

The spelling of 2729240 in words is "two million, seven hundred twenty-nine thousand, two hundred forty".