622438 has 8 divisors (see below), whose sum is σ = 988632. Its totient is φ = 292896.

The previous prime is 622423. The next prime is 622477. The reversal of 622438 is 834226.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

622438 is an untouchable number, because it is not equal to the sum of proper divisors of any 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, 9120 + ... + 9187.

It is an arithmetic number, because the mean of its divisors is an integer number (123579).

2⁶²²⁴³⁸ is an apocalyptic number.

622438 is a deficient number, since it is larger than the sum of its proper divisors (366194).

622438 is a wasteful number, since it uses less digits than its factorization.

622438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18326.

The product of its digits is 2304, while the sum is 25.

The square root of 622438 is about 788.9474000211. The cubic root of 622438 is about 85.3818117822.

It can be divided in two parts, 62 and 2438, that added together give a square (2500 = 50²).

The spelling of 622438 in words is "six hundred twenty-two thousand, four hundred thirty-eight".