405235212 has 48 divisors (see below), whose sum is σ = 984516960. Its totient is φ = 129572352.

The previous prime is 405235199. The next prime is 405235213. The reversal of 405235212 is 212532504.

It is not an unprimeable number, because it can be changed into a prime (405235213) 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, 50928 + ... + 58344.

It is an arithmetic number, because the mean of its divisors is an integer number (20510770).

Almost surely, 2^405235212 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 405235212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (492258480).

405235212 is an abundant number, since it is smaller than the sum of its proper divisors (579281748).

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

405235212 is a wasteful number, since it uses less digits than its factorization.

405235212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7610 (or 7608 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 405235212 is about 20130.4548383786. The cubic root of 405235212 is about 740.0068248701.

Adding to 405235212 its reverse (212532504), we get a palindrome (617767716).

The spelling of 405235212 in words is "four hundred five million, two hundred thirty-five thousand, two hundred twelve".