1988238 has 16 divisors (see below), whose sum is σ = 4544640. Its totient is φ = 568056.

The previous prime is 1988237. The next prime is 1988243. The reversal of 1988238 is 8328891.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1988196 and 1988205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1988237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23628 + ... + 23711.

It is an arithmetic number, because the mean of its divisors is an integer number (284040).

2^1988238 is an apocalyptic number.

1988238 is an abundant number, since it is smaller than the sum of its proper divisors (2556402).

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

1988238 is a wasteful number, since it uses less digits than its factorization.

1988238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47351.

The product of its digits is 27648, while the sum is 39.

The square root of 1988238 is about 1410.0489353210. The cubic root of 1988238 is about 125.7446327023.

The spelling of 1988238 in words is "one million, nine hundred eighty-eight thousand, two hundred thirty-eight".