405213004 has 24 divisors (see below), whose sum is σ = 830194848. Its totient is φ = 169426560.

The previous prime is 405213001. The next prime is 405213013. The reversal of 405213004 is 400312504.

It is a super-2 number, since 2×405213004² = 328395157221408032, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (405213001) 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 7 ways as a sum of consecutive naturals, for example, 175339 + ... + 177634.

It is an arithmetic number, because the mean of its divisors is an integer number (34591452).

Almost surely, 2^405213004 is an apocalyptic number.

It is an amenable number.

405213004 is an abundant number, since it is smaller than the sum of its proper divisors (424981844).

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

405213004 is a wasteful number, since it uses less digits than its factorization.

405213004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353025 (or 353023 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 405213004 is about 20129.9032287788. The cubic root of 405213004 is about 739.9933064892.

Adding to 405213004 its reverse (400312504), we get a palindrome (805525508).

The spelling of 405213004 in words is "four hundred five million, two hundred thirteen thousand, four".