405235252 has 12 divisors (see below), whose sum is σ = 739994976. Its totient is φ = 193808120.

The previous prime is 405235223. The next prime is 405235253. The reversal of 405235252 is 252532504.

It is a self number, because there is not a number n which added to its sum of digits gives 405235252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405235253) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2202274 + ... + 2202457.

It is an arithmetic number, because the mean of its divisors is an integer number (61666248).

Almost surely, 2^405235252 is an apocalyptic number.

It is an amenable number.

405235252 is a deficient number, since it is larger than the sum of its proper divisors (334759724).

405235252 is a wasteful number, since it uses less digits than its factorization.

405235252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4404758 (or 4404756 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 405235252 is about 20130.4558318981. The cubic root of 405235252 is about 740.0068492183.

Adding to 405235252 its reverse (252532504), we get a palindrome (657767756).

It can be divided in two parts, 4052 and 35252, that added together give a cube (39304 = 34³).

The spelling of 405235252 in words is "four hundred five million, two hundred thirty-five thousand, two hundred fifty-two".