1997238 has 8 divisors (see below), whose sum is σ = 3994488. Its totient is φ = 665744.

The previous prime is 1997231. The next prime is 1997243. The reversal of 1997238 is 8327991.

It is a sphenic number, since it is the product of 3 distinct primes.

1997238 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1997196 and 1997205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166431 + ... + 166442.

It is an arithmetic number, because the mean of its divisors is an integer number (499311).

2^1997238 is an apocalyptic number.

1997238 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1997238 is a wasteful number, since it uses less digits than its factorization.

1997238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332878.

The product of its digits is 27216, while the sum is 39.

The square root of 1997238 is about 1413.2367105337. The cubic root of 1997238 is about 125.9340799047.

The spelling of 1997238 in words is "one million, nine hundred ninety-seven thousand, two hundred thirty-eight".