12750530 has 16 divisors (see below), whose sum is σ = 24716664. Its totient is φ = 4707840.

The previous prime is 12750523. The next prime is 12750559. The reversal of 12750530 is 3505721.

It can be written as a sum of positive squares in 4 ways, for example, as 4206601 + 8543929 = 2051^2 + 2923^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12750496 and 12750505.

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, 48911 + ... + 49170.

Almost surely, 2^12750530 is an apocalyptic number.

12750530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12750530 is a deficient number, since it is larger than the sum of its proper divisors (11966134).

12750530 is a wasteful number, since it uses less digits than its factorization.

12750530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98101.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 12750530 is about 3570.7884283446. The cubic root of 12750530 is about 233.6196734111.

The spelling of 12750530 in words is "twelve million, seven hundred fifty thousand, five hundred thirty".