406764220 has 12 divisors (see below), whose sum is σ = 854204904. Its totient is φ = 162705680.

The previous prime is 406764209. The next prime is 406764229. The reversal of 406764220 is 22467604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406764229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10169086 + ... + 10169125.

It is an arithmetic number, because the mean of its divisors is an integer number (71183742).

Almost surely, 2^406764220 is an apocalyptic number.

It is an amenable number.

406764220 is an abundant number, since it is smaller than the sum of its proper divisors (447440684).

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

406764220 is a wasteful number, since it uses less digits than its factorization.

406764220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20338220 (or 20338218 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 406764220 is about 20168.3965649231. The cubic root of 406764220 is about 740.9363724724.

The spelling of 406764220 in words is "four hundred six million, seven hundred sixty-four thousand, two hundred twenty".