12621036 has 24 divisors (see below), whose sum is σ = 29520064. Its totient is φ = 4196880.

The previous prime is 12621017. The next prime is 12621041. The reversal of 12621036 is 63012621.

It is a happy number.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5271 + ... + 7281.

Almost surely, 2^12621036 is an apocalyptic number.

It is an amenable number.

12621036 is an abundant number, since it is smaller than the sum of its proper divisors (16899028).

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

12621036 is a wasteful number, since it uses less digits than its factorization.

12621036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541 (or 2539 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 12621036 is about 3552.6097449621. The cubic root of 12621036 is about 232.8261026930.

Adding to 12621036 its reverse (63012621), we get a palindrome (75633657).

The spelling of 12621036 in words is "twelve million, six hundred twenty-one thousand, thirty-six".