405415212 has 48 divisors (see below), whose sum is σ = 961535232. Its totient is φ = 132932800.

The previous prime is 405415159. The next prime is 405415229. The reversal of 405415212 is 212514504.

It is a super-2 number, since 2×405415212² = 328722988242009888, which contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 201403 + ... + 203405.

It is an arithmetic number, because the mean of its divisors is an integer number (20031984).

Almost surely, 2^405415212 is an apocalyptic number.

It is an amenable number.

405415212 is an abundant number, since it is smaller than the sum of its proper divisors (556120020).

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

405415212 is a wasteful number, since it uses less digits than its factorization.

405415212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278 (or 2276 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 405415212 is about 20134.9251798958. The cubic root of 405415212 is about 740.1163756588.

Adding to 405415212 its reverse (212514504), we get a palindrome (617929716).

It can be divided in two parts, 40541 and 5212, that added together give a triangular number (45753 = T₃₀₂).

The spelling of 405415212 in words is "four hundred five million, four hundred fifteen thousand, two hundred twelve".