1582878447 has 24 divisors (see below), whose sum is σ = 2326599600. Its totient is φ = 1036730880.

The previous prime is 1582878433. The next prime is 1582878497. The reversal of 1582878447 is 7448782851.

It is not a de Polignac number, because 1582878447 - 2⁸ = 1582878191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1582878393 and 1582878402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1582878497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 930804 + ... + 932502.

It is an arithmetic number, because the mean of its divisors is an integer number (96941650).

Almost surely, 2^1582878447 is an apocalyptic number.

1582878447 is a deficient number, since it is larger than the sum of its proper divisors (743721153).

1582878447 is a wasteful number, since it uses less digits than its factorization.

1582878447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3463 (or 3460 counting only the distinct ones).

The product of its digits is 4014080, while the sum is 54.

The square root of 1582878447 is about 39785.4049495541. The cubic root of 1582878447 is about 1165.4201477215.

The spelling of 1582878447 in words is "one billion, five hundred eighty-two million, eight hundred seventy-eight thousand, four hundred forty-seven".