2409040 has 20 divisors (see below), whose sum is σ = 5601204. Its totient is φ = 963584.

The previous prime is 2409031. The next prime is 2409061. The reversal of 2409040 is 409042.

It can be written as a sum of positive squares in 2 ways, for example, as 1648656 + 760384 = 1284^2 + 872^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 2408999 and 2409017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14977 + ... + 15136.

2^2409040 is an apocalyptic number.

2409040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2409040 is an abundant number, since it is smaller than the sum of its proper divisors (3192164).

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

2409040 is a wasteful number, since it uses less digits than its factorization.

2409040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30126 (or 30120 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2409040 is about 1552.1082436480. The cubic root of 2409040 is about 134.0544814474.

The spelling of 2409040 in words is "two million, four hundred nine thousand, forty".