12583540 has 12 divisors (see below), whose sum is σ = 26425476. Its totient is φ = 5033408.

The previous prime is 12583523. The next prime is 12583559. The reversal of 12583540 is 4538521.

It can be written as a sum of positive squares in 2 ways, for example, as 2202256 + 10381284 = 1484^2 + 3222^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12583499 and 12583508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314569 + ... + 314608.

It is an arithmetic number, because the mean of its divisors is an integer number (2202123).

Almost surely, 2^12583540 is an apocalyptic number.

12583540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12583540 is an abundant number, since it is smaller than the sum of its proper divisors (13841936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12583540 is a wasteful number, since it uses less digits than its factorization.

12583540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629186 (or 629184 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 12583540 is about 3547.3285723203. The cubic root of 12583540 is about 232.5953052834.

The spelling of 12583540 in words is "twelve million, five hundred eighty-three thousand, five hundred forty".