13220998 has 32 divisors (see below), whose sum is σ = 24906240. Its totient is φ = 5132160.

The previous prime is 13220993. The next prime is 13221007. The reversal of 13220998 is 89902231.

13220998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13220993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5038 + ... + 7198.

It is an arithmetic number, because the mean of its divisors is an integer number (778320).

Almost surely, 2^13220998 is an apocalyptic number.

13220998 is a deficient number, since it is larger than the sum of its proper divisors (11685242).

13220998 is a wasteful number, since it uses less digits than its factorization.

13220998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2212.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 13220998 is about 3636.0690312479. The cubic root of 13220998 is about 236.4583999525.

The spelling of 13220998 in words is "thirteen million, two hundred twenty thousand, nine hundred ninety-eight".