2154444 has 48 divisors (see below), whose sum is σ = 5443200. Its totient is φ = 660736.

The previous prime is 2154419. The next prime is 2154487. The reversal of 2154444 is 4444512.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11947 + ... + 12125.

It is an arithmetic number, because the mean of its divisors is an integer number (113400).

2^2154444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2721600).

2154444 is an abundant number, since it is smaller than the sum of its proper divisors (3288756).

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

2154444 is a wasteful number, since it uses less digits than its factorization.

2154444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 260 counting only the distinct ones).

The product of its digits is 2560, while the sum is 24.

The square root of 2154444 is about 1467.8024390224. The cubic root of 2154444 is about 129.1551525405.

Adding to 2154444 its reverse (4444512), we get a palindrome (6598956).

The spelling of 2154444 in words is "two million, one hundred fifty-four thousand, four hundred forty-four".