2189144 has 8 divisors (see below), whose sum is σ = 4104660. Its totient is φ = 1094568.

The previous prime is 2189101. The next prime is 2189147. The reversal of 2189144 is 4419812.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136814 + ... + 136829.

2^2189144 is an apocalyptic number.

It is an amenable number.

2189144 is a deficient number, since it is larger than the sum of its proper divisors (1915516).

2189144 is a wasteful number, since it uses less digits than its factorization.

2189144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273649 (or 273645 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 2189144 is about 1479.5756148301. The cubic root of 2189144 is about 129.8448642518.

The spelling of 2189144 in words is "two million, one hundred eighty-nine thousand, one hundred forty-four".