2478244 has 6 divisors (see below), whose sum is σ = 4336934. Its totient is φ = 1239120.

The previous prime is 2478241. The next prime is 2478257. The reversal of 2478244 is 4428742.

It can be written as a sum of positive squares in only one way, i.e., 1721344 + 756900 = 1312^2 + 870^2 .

It is a super-2 number, since 2×2478244² = 12283386647072, which contains 22 as substring.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2478241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309777 + ... + 309784.

2^2478244 is an apocalyptic number.

It is an amenable number.

2478244 is a deficient number, since it is larger than the sum of its proper divisors (1858690).

2478244 is a wasteful number, since it uses less digits than its factorization.

2478244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619565 (or 619563 counting only the distinct ones).

The product of its digits is 14336, while the sum is 31.

The square root of 2478244 is about 1574.2439455180. The cubic root of 2478244 is about 135.3260341026.

The spelling of 2478244 in words is "two million, four hundred seventy-eight thousand, two hundred forty-four".