20133461 has 4 divisors (see below), whose sum is σ = 20191500. Its totient is φ = 20075424.

The previous prime is 20133431. The next prime is 20133479. The reversal of 20133461 is 16433102.

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 8614225 + 11519236 = 2935^2 + 3394^2 .

It is a cyclic number.

It is not a de Polignac number, because 20133461 - 2⁶ = 20133397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20133401) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 28496 + ... + 29193.

It is an arithmetic number, because the mean of its divisors is an integer number (5047875).

Almost surely, 2^20133461 is an apocalyptic number.

It is an amenable number.

20133461 is a deficient number, since it is larger than the sum of its proper divisors (58039).

20133461 is an equidigital number, since it uses as much as digits as its factorization.

20133461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58038.

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

The square root of 20133461 is about 4487.0325383264. The cubic root of 20133461 is about 272.0442050776.

Adding to 20133461 its reverse (16433102), we get a palindrome (36566563).

The spelling of 20133461 in words is "twenty million, one hundred thirty-three thousand, four hundred sixty-one".