12518820 has 96 divisors (see below), whose sum is σ = 39513600. Its totient is φ = 3290112.

The previous prime is 12518801. The next prime is 12518837. The reversal of 12518820 is 2881521.

12518820 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52261 + ... + 52499.

It is an arithmetic number, because the mean of its divisors is an integer number (411600).

Almost surely, 2^12518820 is an apocalyptic number.

12518820 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 12518820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19756800).

12518820 is an abundant number, since it is smaller than the sum of its proper divisors (26994780).

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

12518820 is a wasteful number, since it uses less digits than its factorization.

12518820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 12518820 is about 3538.1944548032. The cubic root of 12518820 is about 232.1958562114.

The spelling of 12518820 in words is "twelve million, five hundred eighteen thousand, eight hundred twenty".