405322012 has 12 divisors (see below), whose sum is σ = 712283040. Its totient is φ = 201812576.

The previous prime is 405321997. The next prime is 405322019. The reversal of 405322012 is 210223504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405322019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211033 + ... + 212944.

It is an arithmetic number, because the mean of its divisors is an integer number (59356920).

Almost surely, 2^405322012 is an apocalyptic number.

It is an amenable number.

405322012 is a deficient number, since it is larger than the sum of its proper divisors (306961028).

405322012 is a wasteful number, since it uses less digits than its factorization.

405322012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424220 (or 424218 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 405322012 is about 20132.6106603192. The cubic root of 405322012 is about 740.0596567440.

Adding to 405322012 its reverse (210223504), we get a palindrome (615545516).

The spelling of 405322012 in words is "four hundred five million, three hundred twenty-two thousand, twelve".