405240322 has 32 divisors (see below), whose sum is σ = 682516800. Its totient is φ = 179324928.

The previous prime is 405240313. The next prime is 405240323. The reversal of 405240322 is 223042504.

It is a junction number, because it is equal to n+sod(n) for n = 405240293 and 405240302.

It is not an unprimeable number, because it can be changed into a prime (405240323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87538 + ... + 92050.

It is an arithmetic number, because the mean of its divisors is an integer number (21328650).

Almost surely, 2^405240322 is an apocalyptic number.

405240322 is a deficient number, since it is larger than the sum of its proper divisors (277276478).

405240322 is a wasteful number, since it uses less digits than its factorization.

405240322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4690.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 405240322 is about 20130.5817600982. The cubic root of 405240322 is about 740.0099353426.

Adding to 405240322 its reverse (223042504), we get a palindrome (628282826).

The spelling of 405240322 in words is "four hundred five million, two hundred forty thousand, three hundred twenty-two".