2478429 has 12 divisors (see below), whose sum is σ = 3613116. Its totient is φ = 1636992.

The previous prime is 2478407. The next prime is 2478449. The reversal of 2478429 is 9248742.

It can be written as a sum of positive squares in 2 ways, for example, as 1102500 + 1375929 = 1050^2 + 1173^2 .

It is not a de Polignac number, because 2478429 - 2⁸ = 2478173 is a prime.

It is a super-2 number, since 2×2478429² = 12285220616082, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2478393 and 2478402.

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 in 11 ways as a sum of consecutive naturals, for example, 202 + ... + 2235.

It is an arithmetic number, because the mean of its divisors is an integer number (301093).

2^2478429 is an apocalyptic number.

It is an amenable number.

2478429 is a deficient number, since it is larger than the sum of its proper divisors (1134687).

2478429 is a wasteful number, since it uses less digits than its factorization.

2478429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556 (or 2553 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 2478429 is about 1574.3027027862. The cubic root of 2478429 is about 135.3294013649.

The spelling of 2478429 in words is "two million, four hundred seventy-eight thousand, four hundred twenty-nine".