20483405 has 8 divisors (see below), whose sum is σ = 25373184. Its totient is φ = 15858000.

The previous prime is 20483401. The next prime is 20483417. The reversal of 20483405 is 50438402.

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

It is not a de Polignac number, because 20483405 - 2² = 20483401 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20483401) 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, 65921 + ... + 66230.

It is an arithmetic number, because the mean of its divisors is an integer number (3171648).

Almost surely, 2^20483405 is an apocalyptic number.

It is an amenable number.

20483405 is a deficient number, since it is larger than the sum of its proper divisors (4889779).

20483405 is a wasteful number, since it uses less digits than its factorization.

20483405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132187.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 20483405 is about 4525.8595868630. The cubic root of 20483405 is about 273.6113133054.

The spelling of 20483405 in words is "twenty million, four hundred eighty-three thousand, four hundred five".