2021238 has 12 divisors (see below), whose sum is σ = 4379388. Its totient is φ = 673740.

The previous prime is 2021237. The next prime is 2021251. The reversal of 2021238 is 8321202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 112291 = 2021238 / (2 + 0 + 2 + 1 + 2 + 3 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 2021238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021237) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56128 + ... + 56163.

It is an arithmetic number, because the mean of its divisors is an integer number (364949).

2^2021238 is an apocalyptic number.

2021238 is an abundant number, since it is smaller than the sum of its proper divisors (2358150).

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

2021238 is a wasteful number, since it uses less digits than its factorization.

2021238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112299 (or 112296 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2021238 is about 1421.7025005253. The cubic root of 2021238 is about 126.4365057058.

The spelling of 2021238 in words is "two million, twenty-one thousand, two hundred thirty-eight".