20313330 has 16 divisors (see below), whose sum is σ = 48752064. Its totient is φ = 5416880.

The previous prime is 20313281. The next prime is 20313343. The reversal of 20313330 is 3331302.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338526 + ... + 338585.

It is an arithmetic number, because the mean of its divisors is an integer number (3047004).

Almost surely, 2^20313330 is an apocalyptic number.

20313330 is an abundant number, since it is smaller than the sum of its proper divisors (28438734).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20313330 is a wasteful number, since it uses less digits than its factorization.

20313330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677121.

The product of its (nonzero) digits is 162, while the sum is 15.

The square root of 20313330 is about 4507.0311736219. The cubic root of 20313330 is about 272.8519370473.

Adding to 20313330 its reverse (3331302), we get a palindrome (23644632).

The spelling of 20313330 in words is "twenty million, three hundred thirteen thousand, three hundred thirty".