406181604 has 24 divisors (see below), whose sum is σ = 961904608. Its totient is φ = 133372800.

The previous prime is 406181591. The next prime is 406181621.

406181604 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 251797 + ... + 253404.

Almost surely, 2^406181604 is an apocalyptic number.

It is an amenable number.

406181604 is an abundant number, since it is smaller than the sum of its proper divisors (555723004).

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

406181604 is a wasteful number, since it uses less digits than its factorization.

406181604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505275 (or 505273 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 406181604 is about 20153.9476033853. The cubic root of 406181604 is about 740.5824511012.

The spelling of 406181604 in words is "four hundred six million, one hundred eighty-one thousand, six hundred four".