20017330 has 32 divisors (see below), whose sum is σ = 38697264. Its totient is φ = 7428096.

The previous prime is 20017301. The next prime is 20017357. The reversal of 20017330 is 3371002.

It can be written as a sum of positive squares in 8 ways, for example, as 13417569 + 6599761 = 3663^2 + 2569^2 .

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 in 15 ways as a sum of consecutive naturals, for example, 11604 + ... + 13216.

Almost surely, 2^20017330 is an apocalyptic number.

20017330 is a deficient number, since it is larger than the sum of its proper divisors (18679934).

20017330 is a wasteful number, since it uses less digits than its factorization.

20017330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1710.

The product of its (nonzero) digits is 126, while the sum is 16.

The square root of 20017330 is about 4474.0730883614. The cubic root of 20017330 is about 271.5201404543.

Adding to 20017330 its reverse (3371002), we get a palindrome (23388332).

The spelling of 20017330 in words is "twenty million, seventeen thousand, three hundred thirty".