13620236 has 18 divisors (see below), whose sum is σ = 27727308. Its totient is φ = 5837160.

The previous prime is 13620223. The next prime is 13620287. The reversal of 13620236 is 63202631.

13620236 is digitally balanced in base 2 and base 8, because in such bases it contains all the possibile digits an equal number of times.

13620236 is strictly pandigital in base 8.

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, 34550 + ... + 34941.

It is an arithmetic number, because the mean of its divisors is an integer number (1540406).

Almost surely, 2^13620236 is an apocalyptic number.

It is an amenable number.

13620236 is an abundant number, since it is smaller than the sum of its proper divisors (14107072).

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

13620236 is a wasteful number, since it uses less digits than its factorization.

13620236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69509 (or 69500 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 13620236 is about 3690.5603910517. The cubic root of 13620236 is about 238.8149685677.

Adding to 13620236 its reverse (63202631), we get a palindrome (76822867).

The spelling of 13620236 in words is "thirteen million, six hundred twenty thousand, two hundred thirty-six".