12621724 has 12 divisors (see below), whose sum is σ = 22113000. Its totient is φ = 6303728.

The previous prime is 12621703. The next prime is 12621731. The reversal of 12621724 is 42712621.

It is a plaindrome in base 9.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5502 + ... + 7450.

It is an arithmetic number, because the mean of its divisors is an integer number (1842750).

Almost surely, 2^12621724 is an apocalyptic number.

It is an amenable number.

12621724 is a deficient number, since it is larger than the sum of its proper divisors (9491276).

12621724 is a wasteful number, since it uses less digits than its factorization.

12621724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572 (or 3570 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 12621724 is about 3552.7065738673. The cubic root of 12621724 is about 232.8303332345.

The spelling of 12621724 in words is "twelve million, six hundred twenty-one thousand, seven hundred twenty-four".