2423840 has 24 divisors (see below), whose sum is σ = 5726700. Its totient is φ = 969472.

The previous prime is 2423831. The next prime is 2423851. The reversal of 2423840 is 483242.

2423840 = T₁₇₅ + T₁₇₆ + ... + T₂₇₀.

It can be written as a sum of positive squares in 2 ways, for example, as 2421136 + 2704 = 1556^2 + 52^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7415 + ... + 7734.

2^2423840 is an apocalyptic number.

2423840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2423840 is an abundant number, since it is smaller than the sum of its proper divisors (3302860).

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

2423840 is a wasteful number, since it uses less digits than its factorization.

2423840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15164 (or 15156 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 2423840 is about 1556.8686521348. The cubic root of 2423840 is about 134.3284435796.

The spelling of 2423840 in words is "two million, four hundred twenty-three thousand, eight hundred forty".