2456240 has 20 divisors (see below), whose sum is σ = 5710944. Its totient is φ = 982464.

The previous prime is 2456197. The next prime is 2456243. The reversal of 2456240 is 426542.

2456240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×2456240² = 12066229875200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2456243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15272 + ... + 15431.

2^2456240 is an apocalyptic number.

2456240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2456240 is an abundant number, since it is smaller than the sum of its proper divisors (3254704).

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

2456240 is a wasteful number, since it uses less digits than its factorization.

2456240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30716 (or 30710 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2456240 is about 1567.2396115464. The cubic root of 2456240 is about 134.9243288771.

The spelling of 2456240 in words is "two million, four hundred fifty-six thousand, two hundred forty".