20038249 has 16 divisors (see below), whose sum is σ = 25128576. Its totient is φ = 15523200.

The previous prime is 20038247. The next prime is 20038253. The reversal of 20038249 is 94283002.

It is not a de Polignac number, because 20038249 - 2¹ = 20038247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20038241) 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, 14509 + ... + 15829.

It is an arithmetic number, because the mean of its divisors is an integer number (1570536).

Almost surely, 2^20038249 is an apocalyptic number.

It is an amenable number.

20038249 is a deficient number, since it is larger than the sum of its proper divisors (5090327).

20038249 is a wasteful number, since it uses less digits than its factorization.

20038249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 20038249 is about 4476.4102805708. The cubic root of 20038249 is about 271.6146910657.

The spelling of 20038249 in words is "twenty million, thirty-eight thousand, two hundred forty-nine".