1730138 has 4 divisors (see below), whose sum is σ = 2595210. Its totient is φ = 865068.

The previous prime is 1730119. The next prime is 1730147. The reversal of 1730138 is 8310371.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 889249 + 840889 = 943^2 + 917^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432533 + ... + 432536.

2^1730138 is an apocalyptic number.

1730138 is a deficient number, since it is larger than the sum of its proper divisors (865072).

1730138 is an equidigital number, since it uses as much as digits as its factorization.

1730138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865071.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1730138 is about 1315.3471024790. The cubic root of 1730138 is about 120.0494703436.

The spelling of 1730138 in words is "one million, seven hundred thirty thousand, one hundred thirty-eight".