1390238 has 8 divisors (see below), whose sum is σ = 2141832. Its totient is φ = 676296.

The previous prime is 1390219. The next prime is 1390241. The reversal of 1390238 is 8320931.

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, 9320 + ... + 9467.

It is an arithmetic number, because the mean of its divisors is an integer number (267729).

2^1390238 is an apocalyptic number.

1390238 is a deficient number, since it is larger than the sum of its proper divisors (751594).

1390238 is a wasteful number, since it uses less digits than its factorization.

1390238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18826.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1390238 is about 1179.0835424176. The cubic root of 1390238 is about 111.6082722336.

The spelling of 1390238 in words is "one million, three hundred ninety thousand, two hundred thirty-eight".