22002445 has 16 divisors (see below), whose sum is σ = 27987120. Its totient is φ = 16576000.

The previous prime is 22002443. The next prime is 22002509. The reversal of 22002445 is 54420022.

It can be written as a sum of positive squares in 8 ways, for example, as 3175524 + 18826921 = 1782^2 + 4339^2 .

It is not a de Polignac number, because 22002445 - 2¹ = 22002443 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4095 + ... + 7795.

It is an arithmetic number, because the mean of its divisors is an integer number (1749195).

Almost surely, 2^22002445 is an apocalyptic number.

It is an amenable number.

22002445 is a deficient number, since it is larger than the sum of its proper divisors (5984675).

22002445 is a wasteful number, since it uses less digits than its factorization.

22002445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3776.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 22002445 is about 4690.6763904580. The cubic root of 22002445 is about 280.2143129631.

Adding to 22002445 its reverse (54420022), we get a palindrome (76422467).

The spelling of 22002445 in words is "twenty-two million, two thousand, four hundred forty-five".