405243604 has 24 divisors (see below), whose sum is σ = 722210048. Its totient is φ = 198918720.

The previous prime is 405243589. The next prime is 405243623. The reversal of 405243604 is 406342504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81469 + ... + 86299.

Almost surely, 2^405243604 is an apocalyptic number.

It is an amenable number.

405243604 is a deficient number, since it is larger than the sum of its proper divisors (316966444).

405243604 is a wasteful number, since it uses less digits than its factorization.

405243604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5215 (or 5213 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 28.

The square root of 405243604 is about 20130.6632776965. The cubic root of 405243604 is about 740.0119330922.

The spelling of 405243604 in words is "four hundred five million, two hundred forty-three thousand, six hundred four".