2478724 has 6 divisors (see below), whose sum is σ = 4337774. Its totient is φ = 1239360.

The previous prime is 2478713. The next prime is 2478727. The reversal of 2478724 is 4278742.

It can be written as a sum of positive squares in only one way, i.e., 1397124 + 1081600 = 1182^2 + 1040^2 .

It is a super-2 number, since 2×2478724² = 12288145336352, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2478724.

It is not an unprimeable number, because it can be changed into a prime (2478727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309837 + ... + 309844.

2^2478724 is an apocalyptic number.

It is an amenable number.

2478724 is a deficient number, since it is larger than the sum of its proper divisors (1859050).

2478724 is a wasteful number, since it uses less digits than its factorization.

2478724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619685 (or 619683 counting only the distinct ones).

The product of its digits is 25088, while the sum is 34.

The square root of 2478724 is about 1574.3963922723. The cubic root of 2478724 is about 135.3347704367.

The spelling of 2478724 in words is "two million, four hundred seventy-eight thousand, seven hundred twenty-four".