12755730 has 32 divisors (see below), whose sum is σ = 32969664. Its totient is φ = 3139776.

The previous prime is 12755723. The next prime is 12755749. The reversal of 12755730 is 3755721.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15964 + ... + 16743.

It is an arithmetic number, because the mean of its divisors is an integer number (1030302).

Almost surely, 2^12755730 is an apocalyptic number.

12755730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12755730 is an abundant number, since it is smaller than the sum of its proper divisors (20213934).

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

12755730 is a wasteful number, since it uses less digits than its factorization.

12755730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32730.

The product of its (nonzero) digits is 7350, while the sum is 30.

The square root of 12755730 is about 3571.5164846323. The cubic root of 12755730 is about 233.6514278348.

Subtracting from 12755730 its reverse (3755721), we obtain a palindrome (9000009).

The spelling of 12755730 in words is "twelve million, seven hundred fifty-five thousand, seven hundred thirty".