20020461 has 16 divisors (see below), whose sum is σ = 27216000. Its totient is φ = 13088768.

The previous prime is 20020457. The next prime is 20020463. The reversal of 20020461 is 16402002.

It is a cyclic number.

It is not a de Polignac number, because 20020461 - 2² = 20020457 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44365 + ... + 44813.

It is an arithmetic number, because the mean of its divisors is an integer number (1701000).

Almost surely, 2^20020461 is an apocalyptic number.

It is an amenable number.

20020461 is a deficient number, since it is larger than the sum of its proper divisors (7195539).

20020461 is a wasteful number, since it uses less digits than its factorization.

20020461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 20020461 is about 4474.4229795584. The cubic root of 20020461 is about 271.5342962756.

Adding to 20020461 its reverse (16402002), we get a palindrome (36422463).

The spelling of 20020461 in words is "twenty million, twenty thousand, four hundred sixty-one".