13621008 has 20 divisors (see below), whose sum is σ = 35187728. Its totient is φ = 4540320.

The previous prime is 13621001. The next prime is 13621009. The reversal of 13621008 is 80012631.

It is not an unprimeable number, because it can be changed into a prime (13621001) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 141838 + ... + 141933.

Almost surely, 2^13621008 is an apocalyptic number.

It is an amenable number.

13621008 is an abundant number, since it is smaller than the sum of its proper divisors (21566720).

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

13621008 is a wasteful number, since it uses less digits than its factorization.

13621008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283782 (or 283776 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 13621008 is about 3690.6649807318. The cubic root of 13621008 is about 238.8194805226.

Adding to 13621008 its reverse (80012631), we get a palindrome (93633639).

The spelling of 13621008 in words is "thirteen million, six hundred twenty-one thousand, eight".