406222680 has 64 divisors (see below), whose sum is σ = 1224864000. Its totient is φ = 107775360.

The previous prime is 406222669. The next prime is 406222693. The reversal of 406222680 is 86222604.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15375 + ... + 32385.

It is an arithmetic number, because the mean of its divisors is an integer number (19138500).

Almost surely, 2^406222680 is an apocalyptic number.

406222680 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406222680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (612432000).

406222680 is an abundant number, since it is smaller than the sum of its proper divisors (818641320).

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

406222680 is a wasteful number, since it uses less digits than its factorization.

406222680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17224 (or 17220 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 406222680 is about 20154.9666335621. The cubic root of 406222680 is about 740.6074145979.

The spelling of 406222680 in words is "four hundred six million, two hundred twenty-two thousand, six hundred eighty".