2478446 has 4 divisors (see below), whose sum is σ = 3717672. Its totient is φ = 1239222.

The previous prime is 2478407. The next prime is 2478449. The reversal of 2478446 is 6448742.

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

It is a super-2 number, since 2×2478446² = 12285389149832, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2478449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 619610 + ... + 619613.

It is an arithmetic number, because the mean of its divisors is an integer number (929418).

2^2478446 is an apocalyptic number.

2478446 is a deficient number, since it is larger than the sum of its proper divisors (1239226).

2478446 is a wasteful number, since it uses less digits than its factorization.

2478446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239225.

The product of its digits is 43008, while the sum is 35.

The square root of 2478446 is about 1574.3081019927. The cubic root of 2478446 is about 135.3297107806.

The spelling of 2478446 in words is "two million, four hundred seventy-eight thousand, four hundred forty-six".