12730537 has 8 divisors (see below), whose sum is σ = 13077504. Its totient is φ = 12385968.

The previous prime is 12730519. The next prime is 12730567. The reversal of 12730537 is 73503721.

12730537 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12730537 - 2⁷ = 12730409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12730567) 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, 16083 + ... + 16855.

It is an arithmetic number, because the mean of its divisors is an integer number (1634688).

Almost surely, 2^12730537 is an apocalyptic number.

It is an amenable number.

12730537 is a deficient number, since it is larger than the sum of its proper divisors (346967).

12730537 is an equidigital number, since it uses as much as digits as its factorization.

12730537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199.

The product of its (nonzero) digits is 4410, while the sum is 28.

The square root of 12730537 is about 3567.9878082751. The cubic root of 12730537 is about 233.4975032862.

The spelling of 12730537 in words is "twelve million, seven hundred thirty thousand, five hundred thirty-seven".