20633330 has 16 divisors (see below), whose sum is σ = 37350720. Its totient is φ = 8206512.

The previous prime is 20633317. The next prime is 20633339. The reversal of 20633330 is 3333602.

It is not an unprimeable number, because it can be changed into a prime (20633339) 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, 3974 + ... + 7553.

It is an arithmetic number, because the mean of its divisors is an integer number (2334420).

Almost surely, 2^20633330 is an apocalyptic number.

20633330 is a deficient number, since it is larger than the sum of its proper divisors (16717390).

20633330 is a wasteful number, since it uses less digits than its factorization.

20633330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11713.

The product of its (nonzero) digits is 972, while the sum is 20.

The square root of 20633330 is about 4542.3925413817. The cubic root of 20633330 is about 274.2772426027.

Adding to 20633330 its reverse (3333602), we get a palindrome (23966932).

The spelling of 20633330 in words is "twenty million, six hundred thirty-three thousand, three hundred thirty".