738438 has 16 divisors (see below), whose sum is σ = 1541376. Its totient is φ = 235400.

The previous prime is 738421. The next prime is 738443. The reversal of 738438 is 834837.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 738399 and 738408.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 738438.

It is an unprimeable number.

738438 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 7 ways as a sum of consecutive naturals, for example, 2538 + ... + 2813.

It is an arithmetic number, because the mean of its divisors is an integer number (96336).

2⁷³⁸⁴³⁸ is an apocalyptic number.

738438 is an abundant number, since it is smaller than the sum of its proper divisors (802938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

738438 is a wasteful number, since it uses less digits than its factorization.

738438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5379.

The product of its digits is 16128, while the sum is 33.

The square root of 738438 is about 859.3241530412. The cubic root of 738438 is about 90.3867308950.

It can be divided in two parts, 738 and 438, that added together give a triangular number (1176 = T₄₈).

The spelling of 738438 in words is "seven hundred thirty-eight thousand, four hundred thirty-eight".