1623238 has 4 divisors (see below), whose sum is σ = 2434860. Its totient is φ = 811618.

The previous prime is 1623233. The next prime is 1623263. The reversal of 1623238 is 8323261.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1623233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405808 + ... + 405811.

It is an arithmetic number, because the mean of its divisors is an integer number (608715).

2^1623238 is an apocalyptic number.

1623238 is a deficient number, since it is larger than the sum of its proper divisors (811622).

1623238 is an equidigital number, since it uses as much as digits as its factorization.

1623238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811621.

The product of its digits is 1728, while the sum is 25.

The square root of 1623238 is about 1274.0635776915. The cubic root of 1623238 is about 117.5242261802.

Adding to 1623238 its reverse (8323261), we get a palindrome (9946499).

The spelling of 1623238 in words is "one million, six hundred twenty-three thousand, two hundred thirty-eight".