405230004 has 18 divisors (see below), whose sum is σ = 1024331490. Its totient is φ = 135076656.

The previous prime is 405229999. The next prime is 405230011. The reversal of 405230004 is 400032504.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 380250000 + 24980004 = 19500^2 + 4998^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×405230004² = 328422712283680032, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 5628159 + ... + 5628230.

It is an arithmetic number, because the mean of its divisors is an integer number (56907305).

Almost surely, 2^405230004 is an apocalyptic number.

It is an amenable number.

405230004 is an abundant number, since it is smaller than the sum of its proper divisors (619101486).

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

405230004 is a wasteful number, since it uses less digits than its factorization.

405230004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11256399 (or 11256394 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 405230004 is about 20130.3254817204. The cubic root of 405230004 is about 740.0036547178.

Adding to 405230004 its reverse (400032504), we get a palindrome (805262508).

The spelling of 405230004 in words is "four hundred five million, two hundred thirty thousand, four".