2445444 has 24 divisors (see below), whose sum is σ = 6340320. Its totient is φ = 815112.

The previous prime is 2445437. The next prime is 2445451. The reversal of 2445444 is 4445442.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2445437) and next prime (2445451).

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

It is a plaindrome in base 15.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11214 + ... + 11429.

It is an arithmetic number, because the mean of its divisors is an integer number (264180).

2^2445444 is an apocalyptic number.

It is an amenable number.

2445444 is an abundant number, since it is smaller than the sum of its proper divisors (3894876).

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

2445444 is a wasteful number, since it uses less digits than its factorization.

2445444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22656 (or 22648 counting only the distinct ones).

The product of its digits is 10240, while the sum is 27.

The square root of 2445444 is about 1563.7915462107. The cubic root of 2445444 is about 134.7263592940.

The spelling of 2445444 in words is "two million, four hundred forty-five thousand, four hundred forty-four".