1630238 has 8 divisors (see below), whose sum is σ = 2574120. Its totient is φ = 772200.

The previous prime is 1630199. The next prime is 1630243. The reversal of 1630238 is 8320361.

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, 21413 + ... + 21488.

It is an arithmetic number, because the mean of its divisors is an integer number (321765).

2^1630238 is an apocalyptic number.

1630238 is a deficient number, since it is larger than the sum of its proper divisors (943882).

1630238 is a wasteful number, since it uses less digits than its factorization.

1630238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42922.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1630238 is about 1276.8077380718. The cubic root of 1630238 is about 117.6929198359.

Adding to 1630238 its reverse (8320361), we get a palindrome (9950599).

The spelling of 1630238 in words is "one million, six hundred thirty thousand, two hundred thirty-eight".