20375238 has 32 divisors (see below), whose sum is σ = 44354016. Its totient is φ = 6202368.

The previous prime is 20375227. The next prime is 20375269. The reversal of 20375238 is 83257302.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6220 + ... + 8912.

It is an arithmetic number, because the mean of its divisors is an integer number (1386063).

Almost surely, 2^20375238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20375238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22177008).

20375238 is an abundant number, since it is smaller than the sum of its proper divisors (23978778).

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

20375238 is a wasteful number, since it uses less digits than its factorization.

20375238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 20375238 is about 4513.8938844417. The cubic root of 20375238 is about 273.1288420268.

The spelling of 20375238 in words is "twenty million, three hundred seventy-five thousand, two hundred thirty-eight".