12946520 has 64 divisors (see below), whose sum is σ = 31363200. Its totient is φ = 4792320.

The previous prime is 12946519. The next prime is 12946603. The reversal of 12946520 is 2564921.

It is a happy number.

It is a super-2 number, since 2×12946520² = 335224760220800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53600 + ... + 53840.

It is an arithmetic number, because the mean of its divisors is an integer number (490050).

Almost surely, 2^12946520 is an apocalyptic number.

12946520 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 12946520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15681600).

12946520 is an abundant number, since it is smaller than the sum of its proper divisors (18416680).

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

12946520 is a wasteful number, since it uses less digits than its factorization.

12946520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 344 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 12946520 is about 3598.1272906889. The cubic root of 12946520 is about 234.8105913050.

The spelling of 12946520 in words is "twelve million, nine hundred forty-six thousand, five hundred twenty".