20703330 has 32 divisors (see below), whose sum is σ = 55209600. Its totient is φ = 5520816.

The previous prime is 20703329. The next prime is 20703341. The reversal of 20703330 is 3330702.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38070 + ... + 38609.

It is an arithmetic number, because the mean of its divisors is an integer number (1725300).

Almost surely, 2^20703330 is an apocalyptic number.

20703330 is an abundant number, since it is smaller than the sum of its proper divisors (34506270).

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

20703330 is a wasteful number, since it uses less digits than its factorization.

20703330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76695 (or 76689 counting only the distinct ones).

The product of its (nonzero) digits is 378, while the sum is 18.

The square root of 20703330 is about 4550.0912078770. The cubic root of 20703330 is about 274.5870606825.

The spelling of 20703330 in words is "twenty million, seven hundred three thousand, three hundred thirty".