12712730 has 32 divisors (see below), whose sum is σ = 24105600. Its totient is φ = 4820032.

The previous prime is 12712727. The next prime is 12712741. The reversal of 12712730 is 3721721.

It is a super-2 number, since 2×12712730² = 323227008105800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12712696 and 12712705.

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, 16739 + ... + 17481.

It is an arithmetic number, because the mean of its divisors is an integer number (753300).

Almost surely, 2^12712730 is an apocalyptic number.

12712730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12712730 is a deficient number, since it is larger than the sum of its proper divisors (11392870).

12712730 is a wasteful number, since it uses less digits than its factorization.

12712730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 838.

The product of its (nonzero) digits is 588, while the sum is 23.

The square root of 12712730 is about 3565.4915509646. The cubic root of 12712730 is about 233.3885832885.

The spelling of 12712730 in words is "twelve million, seven hundred twelve thousand, seven hundred thirty".