12750330 has 32 divisors (see below), whose sum is σ = 32212800. Its totient is φ = 3220992.

The previous prime is 12750329. The next prime is 12750347. The reversal of 12750330 is 3305721.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12750297 and 12750306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10615 + ... + 11754.

It is an arithmetic number, because the mean of its divisors is an integer number (1006650).

Almost surely, 2^12750330 is an apocalyptic number.

12750330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12750330 is an abundant number, since it is smaller than the sum of its proper divisors (19462470).

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

12750330 is a wasteful number, since it uses less digits than its factorization.

12750330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22398.

The product of its (nonzero) digits is 630, while the sum is 21.

The square root of 12750330 is about 3570.7604232152. The cubic root of 12750330 is about 233.6184519147.

The spelling of 12750330 in words is "twelve million, seven hundred fifty thousand, three hundred thirty".