20016343 has 6 divisors (see below), whose sum is σ = 20224896. Its totient is φ = 19808712.

The previous prime is 20016319. The next prime is 20016349. The reversal of 20016343 is 34361002.

It is not a de Polignac number, because 20016343 - 2¹³ = 20008151 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20016343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20016349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50221 + ... + 50617.

It is an arithmetic number, because the mean of its divisors is an integer number (3370816).

Almost surely, 2^20016343 is an apocalyptic number.

20016343 is a deficient number, since it is larger than the sum of its proper divisors (208553).

20016343 is an frugal number, since it uses more digits than its factorization.

20016343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20016343 is about 4473.9627848251. The cubic root of 20016343 is about 271.5156777415.

Adding to 20016343 its reverse (34361002), we get a palindrome (54377345).

The spelling of 20016343 in words is "twenty million, sixteen thousand, three hundred forty-three".