12516730 has 16 divisors (see below), whose sum is σ = 23139720. Its totient is φ = 4871232.

The previous prime is 12516703. The next prime is 12516737. The reversal of 12516730 is 3761521.

It can be written as a sum of positive squares in 4 ways, for example, as 12341169 + 175561 = 3513^2 + 419^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12516695 and 12516704.

It is not an unprimeable number, because it can be changed into a prime (12516737) 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, 16545 + ... + 17284.

Almost surely, 2^12516730 is an apocalyptic number.

12516730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12516730 is a deficient number, since it is larger than the sum of its proper divisors (10622990).

12516730 is a wasteful number, since it uses less digits than its factorization.

12516730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33873.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 12516730 is about 3537.8990940953. The cubic root of 12516730 is about 232.1829338979.

The spelling of 12516730 in words is "twelve million, five hundred sixteen thousand, seven hundred thirty".