2478844 has 6 divisors (see below), whose sum is σ = 4337984. Its totient is φ = 1239420.

The previous prime is 2478809. The next prime is 2478877. The reversal of 2478844 is 4488742.

It is a super-2 number, since 2×2478844² = 12289335152672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309852 + ... + 309859.

2^2478844 is an apocalyptic number.

It is an amenable number.

2478844 is a deficient number, since it is larger than the sum of its proper divisors (1859140).

2478844 is a wasteful number, since it uses less digits than its factorization.

2478844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619715 (or 619713 counting only the distinct ones).

The product of its digits is 57344, while the sum is 37.

The square root of 2478844 is about 1574.4345016545. The cubic root of 2478844 is about 135.3369543440.

The spelling of 2478844 in words is "two million, four hundred seventy-eight thousand, eight hundred forty-four".