406407328 has 24 divisors (see below), whose sum is σ = 804595680. Its totient is φ = 202065600.

The previous prime is 406407301. The next prime is 406407329. The reversal of 406407328 is 823704604.

It is a junction number, because it is equal to n+sod(n) for n = 406407293 and 406407302.

It is not an unprimeable number, because it can be changed into a prime (406407329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29748 + ... + 41203.

It is an arithmetic number, because the mean of its divisors is an integer number (33524820).

Almost surely, 2^406407328 is an apocalyptic number.

It is an amenable number.

406407328 is a deficient number, since it is larger than the sum of its proper divisors (398188352).

406407328 is a wasteful number, since it uses less digits than its factorization.

406407328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71140 (or 71132 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The square root of 406407328 is about 20159.5468203033. The cubic root of 406407328 is about 740.7196116511.

The spelling of 406407328 in words is "four hundred six million, four hundred seven thousand, three hundred twenty-eight".