20332330 has 8 divisors (see below), whose sum is σ = 36598212. Its totient is φ = 8132928.

The previous prime is 20332327. The next prime is 20332331. The reversal of 20332330 is 3323302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16883881 + 3448449 = 4109^2 + 1857^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20332331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1016607 + ... + 1016626.

Almost surely, 2^20332330 is an apocalyptic number.

20332330 is a deficient number, since it is larger than the sum of its proper divisors (16265882).

20332330 is a wasteful number, since it uses less digits than its factorization.

20332330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2033240.

The product of its (nonzero) digits is 324, while the sum is 16.

The square root of 20332330 is about 4509.1384986492. The cubic root of 20332330 is about 272.9369808963.

Adding to 20332330 its reverse (3323302), we get a palindrome (23655632).

Subtracting from 20332330 its reverse (3323302), we obtain a triangular number (17009028 = T₅₈₃₂).

The spelling of 20332330 in words is "twenty million, three hundred thirty-two thousand, three hundred thirty".