406378928 has 20 divisors (see below), whose sum is σ = 787793328. Its totient is φ = 203077440.

The previous prime is 406378913. The next prime is 406378963. The reversal of 406378928 is 829873604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28325 + ... + 40187.

Almost surely, 2^406378928 is an apocalyptic number.

It is an amenable number.

406378928 is a deficient number, since it is larger than the sum of its proper divisors (381414400).

406378928 is a wasteful number, since it uses less digits than its factorization.

406378928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14012 (or 14006 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 406378928 is about 20158.8424270840. The cubic root of 406378928 is about 740.7023572649.

The spelling of 406378928 in words is "four hundred six million, three hundred seventy-eight thousand, nine hundred twenty-eight".