20011346 has 8 divisors (see below), whose sum is σ = 31782780. Its totient is φ = 9417088.

The previous prime is 20011319. The next prime is 20011349. The reversal of 20011346 is 64311002.

It can be written as a sum of positive squares in 2 ways, for example, as 16443025 + 3568321 = 4055^2 + 1889^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20011349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294251 + ... + 294318.

Almost surely, 2^20011346 is an apocalyptic number.

20011346 is a deficient number, since it is larger than the sum of its proper divisors (11771434).

20011346 is a wasteful number, since it uses less digits than its factorization.

20011346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588588.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20011346 is about 4473.4042965062. The cubic root of 20011346 is about 271.4930815932.

Adding to 20011346 its reverse (64311002), we get a palindrome (84322348).

The spelling of 20011346 in words is "twenty million, eleven thousand, three hundred forty-six".