356438 has 8 divisors (see below), whose sum is σ = 552000. Its totient is φ = 172440.

The previous prime is 356399. The next prime is 356441. The reversal of 356438 is 834653.

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

It is a self number, because there is not a number n which added to its sum of digits gives 356438.

It is a congruent number.

It is an unprimeable number.

356438 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, 2813 + ... + 2936.

It is an arithmetic number, because the mean of its divisors is an integer number (69000).

2³⁵⁶⁴³⁸ is an apocalyptic number.

356438 is a deficient number, since it is larger than the sum of its proper divisors (195562).

356438 is a wasteful number, since it uses less digits than its factorization.

356438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5782.

The product of its digits is 8640, while the sum is 29.

The square root of 356438 is about 597.0242876132. The cubic root of 356438 is about 70.9024647645.

Subtracting from 356438 its sum of digits (29), we obtain a square (356409 = 597²).

The spelling of 356438 in words is "three hundred fifty-six thousand, four hundred thirty-eight".