405315232 has 48 divisors (see below), whose sum is σ = 926940672. Its totient is φ = 170853120.

The previous prime is 405315203. The next prime is 405315233. The reversal of 405315232 is 232513504.

It is a junction number, because it is equal to n+sod(n) for n = 405315197 and 405315206.

It is not an unprimeable number, because it can be changed into a prime (405315233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168 + ... + 28495.

It is an arithmetic number, because the mean of its divisors is an integer number (19311264).

Almost surely, 2^405315232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405315232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (463470336).

405315232 is an abundant number, since it is smaller than the sum of its proper divisors (521625440).

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

405315232 is a wasteful number, since it uses less digits than its factorization.

405315232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29741 (or 29733 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 405315232 is about 20132.4422760876. The cubic root of 405315232 is about 740.0555302862.

Adding to 405315232 its reverse (232513504), we get a palindrome (637828736).

The spelling of 405315232 in words is "four hundred five million, three hundred fifteen thousand, two hundred thirty-two".