2154168 has 32 divisors (see below), whose sum is σ = 5984400. Its totient is φ = 717984.

The previous prime is 2154161. The next prime is 2154169. The reversal of 2154168 is 8614512.

2154168 is nontrivially palindromic in base 7.

2154168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2154161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4771 + ... + 5202.

2^2154168 is an apocalyptic number.

It is an amenable number.

2154168 is an abundant number, since it is smaller than the sum of its proper divisors (3830232).

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

2154168 is a wasteful number, since it uses less digits than its factorization.

2154168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9988 (or 9978 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 2154168 is about 1467.7084179087. The cubic root of 2154168 is about 129.1496370658.

It can be divided in two parts, 21541 and 68, that added together give a square (21609 = 147²).

The spelling of 2154168 in words is "two million, one hundred fifty-four thousand, one hundred sixty-eight".