20662330 has 16 divisors (see below), whose sum is σ = 40053384. Its totient is φ = 7629120.

The previous prime is 20662309. The next prime is 20662333. The reversal of 20662330 is 3326602.

It can be written as a sum of positive squares in 4 ways, for example, as 17497489 + 3164841 = 4183^2 + 1779^2 .

It is not an unprimeable number, because it can be changed into a prime (20662333) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79341 + ... + 79600.

Almost surely, 2^20662330 is an apocalyptic number.

20662330 is a deficient number, since it is larger than the sum of its proper divisors (19391054).

20662330 is a wasteful number, since it uses less digits than its factorization.

20662330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158961.

The product of its (nonzero) digits is 1296, while the sum is 22.

The square root of 20662330 is about 4545.5835708960. The cubic root of 20662330 is about 274.4056806928.

Adding to 20662330 its reverse (3326602), we get a palindrome (23988932).

The spelling of 20662330 in words is "twenty million, six hundred sixty-two thousand, three hundred thirty".