406378 has 8 divisors (see below), whose sum is σ = 696672. Its totient is φ = 174156.

The previous prime is 406361. The next prime is 406381. The reversal of 406378 is 873604.

406378 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

406378 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14500 + ... + 14527.

It is an arithmetic number, because the mean of its divisors is an integer number (87084).

2⁴⁰⁶³⁷⁸ is an apocalyptic number.

406378 is a deficient number, since it is larger than the sum of its proper divisors (290294).

406378 is a wasteful number, since it uses less digits than its factorization.

406378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29036.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 406378 is about 637.4778427522. The cubic root of 406378 is about 74.0701793446.

It can be divided in two parts, 406 and 378, that added together give a square (784 = 28²).

The spelling of 406378 in words is "four hundred six thousand, three hundred seventy-eight".