20030461 has 6 divisors (see below), whose sum is σ = 22017086. Its totient is φ = 18209400.

The previous prime is 20030453. The next prime is 20030467. The reversal of 20030461 is 16403002.

It can be written as a sum of positive squares in only one way, i.e., 12467961 + 7562500 = 3531^2 + 2750^2 .

It is not a de Polignac number, because 20030461 - 2³ = 20030453 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 (20030467) 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, 82650 + ... + 82891.

Almost surely, 2^20030461 is an apocalyptic number.

It is an amenable number.

20030461 is a deficient number, since it is larger than the sum of its proper divisors (1986625).

20030461 is a wasteful number, since it uses less digits than its factorization.

20030461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165563 (or 165552 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20030461 is about 4475.5403025780. The cubic root of 20030461 is about 271.5794982150.

Adding to 20030461 its reverse (16403002), we get a palindrome (36433463).

The spelling of 20030461 in words is "twenty million, thirty thousand, four hundred sixty-one".