20403461 has 8 divisors (see below), whose sum is σ = 22928640. Its totient is φ = 18014832.

The previous prime is 20403431. The next prime is 20403469. The reversal of 20403461 is 16430402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20403461 - 2²² = 16209157 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 (20403469) 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, 33821 + ... + 34418.

It is an arithmetic number, because the mean of its divisors is an integer number (2866080).

Almost surely, 2^20403461 is an apocalyptic number.

It is an amenable number.

20403461 is a deficient number, since it is larger than the sum of its proper divisors (2525179).

20403461 is a wasteful number, since it uses less digits than its factorization.

20403461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68275.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20403461 is about 4517.0190391452. The cubic root of 20403461 is about 273.2548930511.

Adding to 20403461 its reverse (16430402), we get a palindrome (36833863).

The spelling of 20403461 in words is "twenty million, four hundred three thousand, four hundred sixty-one".