406738 has 8 divisors (see below), whose sum is σ = 623232. Its totient is φ = 198996.

The previous prime is 406729. The next prime is 406739. The reversal of 406738 is 837604.

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

It is not an unprimeable number, because it can be changed into a prime (406739) 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, 2070 + ... + 2257.

It is an arithmetic number, because the mean of its divisors is an integer number (77904).

2⁴⁰⁶⁷³⁸ is an apocalyptic number.

406738 is a deficient number, since it is larger than the sum of its proper divisors (216494).

406738 is a wasteful number, since it uses less digits than its factorization.

406738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4376.

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

The square root of 406738 is about 637.7601430005. The cubic root of 406738 is about 74.0920451891.

The spelling of 406738 in words is "four hundred six thousand, seven hundred thirty-eight".