13220454 has 16 divisors (see below), whose sum is σ = 28474992. Its totient is φ = 4067808.

The previous prime is 13220437. The next prime is 13220461. The reversal of 13220454 is 45402231.

It is a super-2 number, since 2×13220454² = 349560807932232, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13220454.

It is a congruent number.

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, 84669 + ... + 84824.

It is an arithmetic number, because the mean of its divisors is an integer number (1779687).

Almost surely, 2^13220454 is an apocalyptic number.

13220454 is an abundant number, since it is smaller than the sum of its proper divisors (15254538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13220454 is a wasteful number, since it uses less digits than its factorization.

13220454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169511.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 13220454 is about 3635.9942244179. The cubic root of 13220454 is about 236.4551567497.

Adding to 13220454 its reverse (45402231), we get a palindrome (58622685).

The spelling of 13220454 in words is "thirteen million, two hundred twenty thousand, four hundred fifty-four".