13621227 has 8 divisors (see below), whose sum is σ = 18191760. Its totient is φ = 9065760.

The previous prime is 13621219. The next prime is 13621241. The reversal of 13621227 is 72212631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13621227 - 2³ = 13621219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13621197 and 13621206.

It is not an unprimeable number, because it can be changed into a prime (13621247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1452 + ... + 5417.

It is an arithmetic number, because the mean of its divisors is an integer number (2273970).

Almost surely, 2^13621227 is an apocalyptic number.

13621227 is a deficient number, since it is larger than the sum of its proper divisors (4570533).

13621227 is an equidigital number, since it uses as much as digits as its factorization.

13621227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7533.

The product of its digits is 1008, while the sum is 24.

The square root of 13621227 is about 3690.6946500625. The cubic root of 13621227 is about 238.8207604374.

Adding to 13621227 its reverse (72212631), we get a palindrome (85833858).

The spelling of 13621227 in words is "thirteen million, six hundred twenty-one thousand, two hundred twenty-seven".