774438 has 16 divisors (see below), whose sum is σ = 1770240. Its totient is φ = 221256.

The previous prime is 774427. The next prime is 774439. The reversal of 774438 is 834477.

It is a happy number.

774438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 774399 and 774408.

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 774438.

It is not an unprimeable number, because it can be changed into a prime (774439) by changing a digit.

774438 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, 9178 + ... + 9261.

It is an arithmetic number, because the mean of its divisors is an integer number (110640).

2⁷⁷⁴⁴³⁸ is an apocalyptic number.

774438 is an abundant number, since it is smaller than the sum of its proper divisors (995802).

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

774438 is a wasteful number, since it uses less digits than its factorization.

774438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18451.

The product of its digits is 18816, while the sum is 33.

The square root of 774438 is about 880.0215906442. The cubic root of 774438 is about 91.8323190157.

The spelling of 774438 in words is "seven hundred seventy-four thousand, four hundred thirty-eight".