12631020 has 48 divisors (see below), whose sum is σ = 35659008. Its totient is φ = 3340480.

The previous prime is 12631019. The next prime is 12631057. The reversal of 12631020 is 2013621.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7057 + ... + 8663.

It is an arithmetic number, because the mean of its divisors is an integer number (742896).

Almost surely, 2^12631020 is an apocalyptic number.

12631020 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 12631020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17829504).

12631020 is an abundant number, since it is smaller than the sum of its proper divisors (23027988).

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

12631020 is a wasteful number, since it uses less digits than its factorization.

12631020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1750 (or 1748 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 12631020 is about 3554.0146313711. The cubic root of 12631020 is about 232.8874796706.

Adding to 12631020 its reverse (2013621), we get a palindrome (14644641).

The spelling of 12631020 in words is "twelve million, six hundred thirty-one thousand, twenty".