12585730 has 16 divisors (see below), whose sum is σ = 22732344. Its totient is φ = 5016960.

The previous prime is 12585701. The next prime is 12585731. The reversal of 12585730 is 3758521.

It can be written as a sum of positive squares in 4 ways, for example, as 2732409 + 9853321 = 1653^2 + 3139^2 .

It is a super-3 number, since 3×12585730³ (a number of 22 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12585692 and 12585701.

It is not an unprimeable number, because it can be changed into a prime (12585731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1120 + ... + 5140.

Almost surely, 2^12585730 is an apocalyptic number.

12585730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12585730 is a deficient number, since it is larger than the sum of its proper divisors (10146614).

12585730 is a wasteful number, since it uses less digits than its factorization.

12585730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4341.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 12585730 is about 3547.6372418837. The cubic root of 12585730 is about 232.6087978875.

The spelling of 12585730 in words is "twelve million, five hundred eighty-five thousand, seven hundred thirty".