2478428 has 6 divisors (see below), whose sum is σ = 4337256. Its totient is φ = 1239212.

The previous prime is 2478407. The next prime is 2478449. The reversal of 2478428 is 8248742.

2478428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2478407) and next prime (2478449).

It is a super-2 number, since 2×2478428² = 12285210702368, 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 (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309800 + ... + 309807.

It is an arithmetic number, because the mean of its divisors is an integer number (722876).

2^2478428 is an apocalyptic number.

2478428 is the 842-nd centered heptagonal number.

It is an amenable number.

2478428 is a deficient number, since it is larger than the sum of its proper divisors (1858828).

2478428 is a wasteful number, since it uses less digits than its factorization.

2478428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619611 (or 619609 counting only the distinct ones).

The product of its digits is 28672, while the sum is 35.

The square root of 2478428 is about 1574.3023851853. The cubic root of 2478428 is about 135.3293831640.

The spelling of 2478428 in words is "two million, four hundred seventy-eight thousand, four hundred twenty-eight".