406216780 has 24 divisors (see below), whose sum is σ = 853463520. Its totient is φ = 162408960.

The previous prime is 406216709. The next prime is 406216781. The reversal of 406216780 is 87612604.

It is not an unprimeable number, because it can be changed into a prime (406216781) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 57481 + ... + 64159.

It is an arithmetic number, because the mean of its divisors is an integer number (35560980).

Almost surely, 2^406216780 is an apocalyptic number.

It is an amenable number.

406216780 is an abundant number, since it is smaller than the sum of its proper divisors (447246740).

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

406216780 is a wasteful number, since it uses less digits than its factorization.

406216780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9729 (or 9727 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 406216780 is about 20154.8202671222. The cubic root of 406216780 is about 740.6038290399.

The spelling of 406216780 in words is "four hundred six million, two hundred sixteen thousand, seven hundred eighty".