20051330 has 64 divisors (see below), whose sum is σ = 42311808. Its totient is φ = 6773760.

The previous prime is 20051329. The next prime is 20051351. The reversal of 20051330 is 3315002.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 94925 + ... + 95135.

It is an arithmetic number, because the mean of its divisors is an integer number (661122).

Almost surely, 2^20051330 is an apocalyptic number.

20051330 is an abundant number, since it is smaller than the sum of its proper divisors (22260478).

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

20051330 is a wasteful number, since it uses less digits than its factorization.

20051330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 20051330 is about 4477.8711459800. The cubic root of 20051330 is about 271.6737817065.

Adding to 20051330 its reverse (3315002), we get a palindrome (23366332).

The spelling of 20051330 in words is "twenty million, fifty-one thousand, three hundred thirty".