12765530 has 16 divisors (see below), whose sum is σ = 24187680. Its totient is φ = 4837392.

The previous prime is 12765517. The next prime is 12765541. The reversal of 12765530 is 3556721.

It is a junction number, because it is equal to n+sod(n) for n = 12765493 and 12765502.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33404 + ... + 33783.

It is an arithmetic number, because the mean of its divisors is an integer number (1511730).

Almost surely, 2^12765530 is an apocalyptic number.

12765530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12765530 is a deficient number, since it is larger than the sum of its proper divisors (11422150).

12765530 is a wasteful number, since it uses less digits than its factorization.

12765530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67213.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 12765530 is about 3572.8881874472. Note that the first 3 decimals coincide. The cubic root of 12765530 is about 233.7112492599.

The spelling of 12765530 in words is "twelve million, seven hundred sixty-five thousand, five hundred thirty".