1971238 has 8 divisors (see below), whose sum is σ = 3085488. Its totient is φ = 942744.

The previous prime is 1971209. The next prime is 1971241. The reversal of 1971238 is 8321791.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21381 + ... + 21472.

It is an arithmetic number, because the mean of its divisors is an integer number (385686).

2^1971238 is an apocalyptic number.

1971238 is a deficient number, since it is larger than the sum of its proper divisors (1114250).

1971238 is a wasteful number, since it uses less digits than its factorization.

1971238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42878.

The product of its digits is 3024, while the sum is 31.

The square root of 1971238 is about 1404.0078347360. The cubic root of 1971238 is about 125.3852222775.

It can be divided in two parts, 1971 and 238, that added together give a square (2209 = 47²).

The spelling of 1971238 in words is "one million, nine hundred seventy-one thousand, two hundred thirty-eight".