2440478 has 4 divisors (see below), whose sum is σ = 3660720. Its totient is φ = 1220238.

The previous prime is 2440457. The next prime is 2440481. The reversal of 2440478 is 8740442.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2440478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610118 + ... + 610121.

It is an arithmetic number, because the mean of its divisors is an integer number (915180).

2^2440478 is an apocalyptic number.

2440478 is a deficient number, since it is larger than the sum of its proper divisors (1220242).

2440478 is a wasteful number, since it uses less digits than its factorization.

2440478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1220241.

The product of its (nonzero) digits is 7168, while the sum is 29.

The square root of 2440478 is about 1562.2029317601. The cubic root of 2440478 is about 134.6351005429.

The spelling of 2440478 in words is "two million, four hundred forty thousand, four hundred seventy-eight".