223005405 has 48 divisors (see below), whose sum is σ = 433238400. Its totient is φ = 95935488.

The previous prime is 223005383. The next prime is 223005421. The reversal of 223005405 is 504500322.

It is not a de Polignac number, because 223005405 - 2⁵ = 223005373 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26671 + ... + 34019.

It is an arithmetic number, because the mean of its divisors is an integer number (9025800).

Almost surely, 2^223005405 is an apocalyptic number.

It is an amenable number.

223005405 is a deficient number, since it is larger than the sum of its proper divisors (210232995).

223005405 is a wasteful number, since it uses less digits than its factorization.

223005405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7398 (or 7381 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 223005405 is about 14933.3654947570. The cubic root of 223005405 is about 606.4175987544.

Adding to 223005405 its reverse (504500322), we get a palindrome (727505727).

The spelling of 223005405 in words is "two hundred twenty-three million, five thousand, four hundred five".