12912730 has 16 divisors (see below), whose sum is σ = 23284224. Its totient is φ = 5155920.

The previous prime is 12912719. The next prime is 12912769. The reversal of 12912730 is 3721921.

It is a junction number, because it is equal to n+sod(n) for n = 12912695 and 12912704.

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, 9259 + ... + 10561.

It is an arithmetic number, because the mean of its divisors is an integer number (1455264).

Almost surely, 2^12912730 is an apocalyptic number.

12912730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12912730 is a deficient number, since it is larger than the sum of its proper divisors (10371494).

12912730 is a wasteful number, since it uses less digits than its factorization.

12912730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2301.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 12912730 is about 3593.4287247697. The cubic root of 12912730 is about 234.6061306309.

The spelling of 12912730 in words is "twelve million, nine hundred twelve thousand, seven hundred thirty".