12705552 has 40 divisors (see below), whose sum is σ = 36470880. Its totient is φ = 4235040.

The previous prime is 12705523. The next prime is 12705569. The reversal of 12705552 is 25550721.

It is a happy number.

It is a super-2 number, since 2×12705552² = 322862103249408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14274 + ... + 15137.

It is an arithmetic number, because the mean of its divisors is an integer number (911772).

Almost surely, 2^12705552 is an apocalyptic number.

12705552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12705552 is an abundant number, since it is smaller than the sum of its proper divisors (23765328).

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

12705552 is a wasteful number, since it uses less digits than its factorization.

12705552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29428 (or 29416 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

The square root of 12705552 is about 3564.4848155098. The cubic root of 12705552 is about 233.3446488843.

The spelling of 12705552 in words is "twelve million, seven hundred five thousand, five hundred fifty-two".