20423411 has 8 divisors (see below), whose sum is σ = 20758464. Its totient is φ = 20091240.

The previous prime is 20423407. The next prime is 20423441. The reversal of 20423411 is 11432402.

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

It is a cyclic number.

It is not a de Polignac number, because 20423411 - 2² = 20423407 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 20423411.

It is not an unprimeable number, because it can be changed into a prime (20423401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16856 + ... + 18026.

It is an arithmetic number, because the mean of its divisors is an integer number (2594808).

Almost surely, 2^20423411 is an apocalyptic number.

20423411 is a deficient number, since it is larger than the sum of its proper divisors (335053).

20423411 is a wasteful number, since it uses less digits than its factorization.

20423411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1441.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20423411 is about 4519.2268144009. The cubic root of 20423411 is about 273.3439246673.

Adding to 20423411 its reverse (11432402), we get a palindrome (31855813).

The spelling of 20423411 in words is "twenty million, four hundred twenty-three thousand, four hundred eleven".