12621632 has 42 divisors (see below), whose sum is σ = 25943814. Its totient is φ = 6090240.

The previous prime is 12621611. The next prime is 12621647. The reversal of 12621632 is 23612621.

It can be written as a sum of positive squares in 3 ways, for example, as 118336 + 12503296 = 344^2 + 3536^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12621598 and 12621607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 206882 + ... + 206942.

Almost surely, 2^12621632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12621632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12971907).

12621632 is an abundant number, since it is smaller than the sum of its proper divisors (13322182).

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

12621632 is an frugal number, since it uses more digits than its factorization.

12621632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 116 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 12621632 is about 3552.6936259689. The cubic root of 12621632 is about 232.8297675315.

The spelling of 12621632 in words is "twelve million, six hundred twenty-one thousand, six hundred thirty-two".