330138705 has 32 divisors (see below), whose sum is σ = 569955456. Its totient is φ = 162215424.

The previous prime is 330138703. The next prime is 330138727. The reversal of 330138705 is 507831033.

It is not a de Polignac number, because 330138705 - 2¹ = 330138703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (330138703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124069 + ... + 126701.

It is an arithmetic number, because the mean of its divisors is an integer number (17811108).

Almost surely, 2^330138705 is an apocalyptic number.

It is an amenable number.

330138705 is a deficient number, since it is larger than the sum of its proper divisors (239816751).

330138705 is a wasteful number, since it uses less digits than its factorization.

330138705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3297.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 330138705 is about 18169.7194529800. The cubic root of 330138705 is about 691.1391286569.

Adding to 330138705 its reverse (507831033), we get a palindrome (837969738).

The spelling of 330138705 in words is "three hundred thirty million, one hundred thirty-eight thousand, seven hundred five".