12730564 has 24 divisors (see below), whose sum is σ = 27776448. Its totient is φ = 4959840.

The previous prime is 12730519. The next prime is 12730567. The reversal of 12730564 is 46503721.

12730564 = 336² + 337² + ... + 423².

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (12730567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20359 + ... + 20974.

It is an arithmetic number, because the mean of its divisors is an integer number (1157352).

Almost surely, 2^12730564 is an apocalyptic number.

12730564 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12730564 is an abundant number, since it is smaller than the sum of its proper divisors (15045884).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12730564 is a wasteful number, since it uses less digits than its factorization.

12730564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41355 (or 41353 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 12730564 is about 3567.9915919183. The cubic root of 12730564 is about 233.4976683598.

The spelling of 12730564 in words is "twelve million, seven hundred thirty thousand, five hundred sixty-four".