12722154 has 32 divisors (see below), whose sum is σ = 27677376. Its totient is φ = 3882240.

The previous prime is 12722141. The next prime is 12722159. The reversal of 12722154 is 45122721.

It is not an unprimeable number, because it can be changed into a prime (12722159) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2089 + ... + 5459.

It is an arithmetic number, because the mean of its divisors is an integer number (864918).

Almost surely, 2^12722154 is an apocalyptic number.

12722154 is an abundant number, since it is smaller than the sum of its proper divisors (14955222).

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

12722154 is a wasteful number, since it uses less digits than its factorization.

12722154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430.

The product of its digits is 1120, while the sum is 24.

The square root of 12722154 is about 3566.8128630473. The cubic root of 12722154 is about 233.4462396886.

Adding to 12722154 its reverse (45122721), we get a palindrome (57844875).

The spelling of 12722154 in words is "twelve million, seven hundred twenty-two thousand, one hundred fifty-four".