12320454 has 16 divisors (see below), whose sum is σ = 25436160. Its totient is φ = 3974280.

The previous prime is 12320449. The next prime is 12320471. The reversal of 12320454 is 45402321.

It is a super-2 number, since 2×12320454² = 303587173532232, which contains 22 as substring.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 12320454.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32934 + ... + 33305.

It is an arithmetic number, because the mean of its divisors is an integer number (1589760).

Almost surely, 2^12320454 is an apocalyptic number.

12320454 is an abundant number, since it is smaller than the sum of its proper divisors (13115706).

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

12320454 is a wasteful number, since it uses less digits than its factorization.

12320454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66275.

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

The square root of 12320454 is about 3510.0504269882. The cubic root of 12320454 is about 230.9629070330.

Adding to 12320454 its reverse (45402321), we get a palindrome (57722775).

The spelling of 12320454 in words is "twelve million, three hundred twenty thousand, four hundred fifty-four".