20040461 has 8 divisors (see below), whose sum is σ = 23371200. Its totient is φ = 17177244.

The previous prime is 20040443. The next prime is 20040463. The reversal of 20040461 is 16404002.

It is not a de Polignac number, because 20040461 - 2¹⁴ = 20024077 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 (20040463) 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, 28871 + ... + 29556.

It is an arithmetic number, because the mean of its divisors is an integer number (2921400).

Almost surely, 2^20040461 is an apocalyptic number.

It is an amenable number.

20040461 is a deficient number, since it is larger than the sum of its proper divisors (3330739).

20040461 is an frugal number, since it uses more digits than its factorization.

20040461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58448 (or 58434 counting only the distinct ones).

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

The square root of 20040461 is about 4476.6573467265. The cubic root of 20040461 is about 271.6246851124.

Adding to 20040461 its reverse (16404002), we get a palindrome (36444463).

The spelling of 20040461 in words is "twenty million, forty thousand, four hundred sixty-one".