405033012 has 18 divisors (see below), whose sum is σ = 1023833538. Its totient is φ = 135010992.

The previous prime is 405032993. The next prime is 405033029. The reversal of 405033012 is 210330504.

It can be written as a sum of positive squares in only one way, i.e., 350213796 + 54819216 = 18714^2 + 7404^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5625423 + ... + 5625494.

It is an arithmetic number, because the mean of its divisors is an integer number (56879641).

Almost surely, 2^405033012 is an apocalyptic number.

It is an amenable number.

405033012 is an abundant number, since it is smaller than the sum of its proper divisors (618800526).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405033012 is a wasteful number, since it uses less digits than its factorization.

405033012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11250927 (or 11250922 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 405033012 is about 20125.4319705193. The cubic root of 405033012 is about 739.8837241216.

Adding to 405033012 its reverse (210330504), we get a palindrome (615363516).

The spelling of 405033012 in words is "four hundred five million, thirty-three thousand, twelve".