20212346 has 16 divisors (see below), whose sum is σ = 37800000. Its totient is φ = 7874880.

The previous prime is 20212327. The next prime is 20212373. The reversal of 20212346 is 64321202.

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 7 ways as a sum of consecutive naturals, for example, 65471 + ... + 65778.

It is an arithmetic number, because the mean of its divisors is an integer number (2362500).

Almost surely, 2^20212346 is an apocalyptic number.

20212346 is a deficient number, since it is larger than the sum of its proper divisors (17587654).

20212346 is a wasteful number, since it uses less digits than its factorization.

20212346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131269.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20212346 is about 4495.8142755234. The cubic root of 20212346 is about 272.3990412413.

Adding to 20212346 its reverse (64321202), we get a palindrome (84533548).

The spelling of 20212346 in words is "twenty million, two hundred twelve thousand, three hundred forty-six".