13418821 has 8 divisors (see below), whose sum is σ = 15079680. Its totient is φ = 11847792.

The previous prime is 13418819. The next prime is 13418833. The reversal of 13418821 is 12881431.

13418821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 13418821 - 2¹ = 13418819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13418821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13410821) 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, 22141 + ... + 22738.

It is an arithmetic number, because the mean of its divisors is an integer number (1884960).

Almost surely, 2^13418821 is an apocalyptic number.

It is an amenable number.

13418821 is a deficient number, since it is larger than the sum of its proper divisors (1660859).

13418821 is a wasteful number, since it uses less digits than its factorization.

13418821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44915.

The product of its digits is 1536, while the sum is 28.

The square root of 13418821 is about 3663.1708941844. The cubic root of 13418821 is about 237.6319252279.

The spelling of 13418821 in words is "thirteen million, four hundred eighteen thousand, eight hundred twenty-one".