12704920 has 64 divisors (see below), whose sum is σ = 30636000. Its totient is φ = 4727808.

The previous prime is 12704917. The next prime is 12704921. The reversal of 12704920 is 2940721.

It is a super-2 number, since 2×12704920² = 322829984412800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12704921) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 55366 + ... + 55594.

Almost surely, 2^12704920 is an apocalyptic number.

12704920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12704920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15318000).

12704920 is an abundant number, since it is smaller than the sum of its proper divisors (17931080).

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

12704920 is a wasteful number, since it uses less digits than its factorization.

12704920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 328 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 12704920 is about 3564.3961620448. The cubic root of 12704920 is about 233.3407798077.

The spelling of 12704920 in words is "twelve million, seven hundred four thousand, nine hundred twenty".