406777266 has 48 divisors (see below), whose sum is σ = 1013722944. Its totient is φ = 115476192.

The previous prime is 406777201. The next prime is 406777303. The reversal of 406777266 is 662777604.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9501 + ... + 30063.

It is an arithmetic number, because the mean of its divisors is an integer number (21119228).

Almost surely, 2^406777266 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406777266, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506861472).

406777266 is an abundant number, since it is smaller than the sum of its proper divisors (606945678).

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

406777266 is a wasteful number, since it uses less digits than its factorization.

406777266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20735 (or 20732 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The square root of 406777266 is about 20168.7199891317. The cubic root of 406777266 is about 740.9442936481.

The spelling of 406777266 in words is "four hundred six million, seven hundred seventy-seven thousand, two hundred sixty-six".