2009238 has 32 divisors (see below), whose sum is σ = 5011200. Its totient is φ = 521760.

The previous prime is 2009233. The next prime is 2009239. The reversal of 2009238 is 8329002.

2009238 = 122² + 123² + ... + 198².

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009233) 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 15 ways as a sum of consecutive naturals, for example, 1713 + ... + 2636.

It is an arithmetic number, because the mean of its divisors is an integer number (156600).

2^2009238 is an apocalyptic number.

2009238 is an abundant number, since it is smaller than the sum of its proper divisors (3001962).

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

2009238 is a wasteful number, since it uses less digits than its factorization.

2009238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4372.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 2009238 is about 1417.4759257215. The cubic root of 2009238 is about 126.1857929243.

Adding to 2009238 its product of nonzero digits (864), we get a palindrome (2010102).

The spelling of 2009238 in words is "two million, nine thousand, two hundred thirty-eight".