13620638 has 8 divisors (see below), whose sum is σ = 21632832. Its totient is φ = 6409696.

The previous prime is 13620619. The next prime is 13620641. The reversal of 13620638 is 83602631.

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

It is a self number, because there is not a number n which added to its sum of digits gives 13620638.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200270 + ... + 200337.

It is an arithmetic number, because the mean of its divisors is an integer number (2704104).

Almost surely, 2^13620638 is an apocalyptic number.

13620638 is a deficient number, since it is larger than the sum of its proper divisors (8012194).

13620638 is a wasteful number, since it uses less digits than its factorization.

13620638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400626.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 13620638 is about 3690.6148539234. The cubic root of 13620638 is about 238.8173180785.

The spelling of 13620638 in words is "thirteen million, six hundred twenty thousand, six hundred thirty-eight".