2478531904 has 28 divisors (see below), whose sum is σ = 4923618804. Its totient is φ = 1237935104.

The previous prime is 2478531899. The next prime is 2478531917. The reversal of 2478531904 is 4091358742.

It can be written as a sum of positive squares in 2 ways, for example, as 332989504 + 2145542400 = 18248^2 + 46320^2 .

It is a super-2 number, since 2×2478531904² = 12286240798291730432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40674 + ... + 81310.

Almost surely, 2^2478531904 is an apocalyptic number.

It is an amenable number.

2478531904 is a deficient number, since it is larger than the sum of its proper divisors (2445086900).

2478531904 is an equidigital number, since it uses as much as digits as its factorization.

2478531904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41602 (or 41592 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 2478531904 is about 49784.8561713299. The cubic root of 2478531904 is about 1353.3127429116.

The spelling of 2478531904 in words is "two billion, four hundred seventy-eight million, five hundred thirty-one thousand, nine hundred four".