406678384 has 40 divisors (see below), whose sum is σ = 907624448. Its totient is φ = 172912320.

The previous prime is 406678379. The next prime is 406678423. The reversal of 406678384 is 483876604.

It is a congruent number.

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, 72 + ... + 28519.

Almost surely, 2^406678384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406678384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453812224).

406678384 is an abundant number, since it is smaller than the sum of its proper divisors (500946064).

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

406678384 is a wasteful number, since it uses less digits than its factorization.

406678384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28733 (or 28727 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The square root of 406678384 is about 20166.2684698979. The cubic root of 406678384 is about 740.8842509685.

The spelling of 406678384 in words is "four hundred six million, six hundred seventy-eight thousand, three hundred eighty-four".