405020223 has 32 divisors (see below), whose sum is σ = 647352000. Its totient is φ = 249320448.

The previous prime is 405020183. The next prime is 405020233. The reversal of 405020223 is 322020504.

It is not a de Polignac number, because 405020223 - 2⁹ = 405019711 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 405020196 and 405020205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405020233) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16003 + ... + 32651.

It is an arithmetic number, because the mean of its divisors is an integer number (20229750).

Almost surely, 2^405020223 is an apocalyptic number.

405020223 is a deficient number, since it is larger than the sum of its proper divisors (242331777).

405020223 is a wasteful number, since it uses less digits than its factorization.

405020223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16728 (or 16722 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 405020223 is about 20125.1142357006. The cubic root of 405020223 is about 739.8759367131.

Adding to 405020223 its reverse (322020504), we get a palindrome (727040727).

The spelling of 405020223 in words is "four hundred five million, twenty thousand, two hundred twenty-three".