13621772 has 24 divisors (see below), whose sum is σ = 25280640. Its totient is φ = 6410880.

The previous prime is 13621763. The next prime is 13621781. The reversal of 13621772 is 27712631.

It is an interprime number because it is at equal distance from previous prime (13621763) and next prime (13621781).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 3104 + ... + 6072.

It is an arithmetic number, because the mean of its divisors is an integer number (1053360).

Almost surely, 2^13621772 is an apocalyptic number.

It is an amenable number.

13621772 is a deficient number, since it is larger than the sum of its proper divisors (11658868).

13621772 is a wasteful number, since it uses less digits than its factorization.

13621772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3041 (or 3039 counting only the distinct ones).

The product of its digits is 3528, while the sum is 29.

The square root of 13621772 is about 3690.7684836630. The cubic root of 13621772 is about 238.8239455537.

The spelling of 13621772 in words is "thirteen million, six hundred twenty-one thousand, seven hundred seventy-two".