12579540 has 24 divisors (see below), whose sum is σ = 35222880. Its totient is φ = 3354528.

The previous prime is 12579517. The next prime is 12579557. The reversal of 12579540 is 4597521.

It is a super-2 number, since 2×12579540² = 316489653223200, 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 7 ways as a sum of consecutive naturals, for example, 104770 + ... + 104889.

It is an arithmetic number, because the mean of its divisors is an integer number (1467620).

Almost surely, 2^12579540 is an apocalyptic number.

12579540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12579540 is an abundant number, since it is smaller than the sum of its proper divisors (22643340).

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

12579540 is a wasteful number, since it uses less digits than its factorization.

12579540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209671 (or 209669 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 12579540 is about 3546.7647229553. The cubic root of 12579540 is about 232.5706572161.

The spelling of 12579540 in words is "twelve million, five hundred seventy-nine thousand, five hundred forty".