13620772 has 24 divisors (see below), whose sum is σ = 26107200. Its totient is φ = 6166560.

The previous prime is 13620727. The next prime is 13620781. The reversal of 13620772 is 27702631.

It is a self number, because there is not a number n which added to its sum of digits gives 13620772.

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, 14913 + ... + 15799.

It is an arithmetic number, because the mean of its divisors is an integer number (1087800).

Almost surely, 2^13620772 is an apocalyptic number.

It is an amenable number.

13620772 is a deficient number, since it is larger than the sum of its proper divisors (12486428).

13620772 is a wasteful number, since it uses less digits than its factorization.

13620772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1251 (or 1249 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 13620772 is about 3690.6330080353. The cubic root of 13620772 is about 238.8181012385.

The spelling of 13620772 in words is "thirteen million, six hundred twenty thousand, seven hundred seventy-two".