20116433 has 4 divisors (see below), whose sum is σ = 20137380. Its totient is φ = 20095488.

The previous prime is 20116429. The next prime is 20116441. The reversal of 20116433 is 33461102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4804864 + 15311569 = 2192^2 + 3913^2 .

It is a cyclic number.

It is not a de Polignac number, because 20116433 - 2² = 20116429 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20116483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8960 + ... + 10977.

It is an arithmetic number, because the mean of its divisors is an integer number (5034345).

Almost surely, 2^20116433 is an apocalyptic number.

It is an amenable number.

20116433 is a deficient number, since it is larger than the sum of its proper divisors (20947).

20116433 is a wasteful number, since it uses less digits than its factorization.

20116433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20946.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20116433 is about 4485.1346691042. The cubic root of 20116433 is about 271.9674890857.

Adding to 20116433 its reverse (33461102), we get a palindrome (53577535).

It can be divided in two parts, 201 and 16433, that multiplied together give a palindrome (3303033).

The spelling of 20116433 in words is "twenty million, one hundred sixteen thousand, four hundred thirty-three".