347428 has 6 divisors (see below), whose sum is σ = 608006. Its totient is φ = 173712.

The previous prime is 347411. The next prime is 347437. The reversal of 347428 is 824743.

It can be written as a sum of positive squares in only one way, i.e., 278784 + 68644 = 528^2 + 262^2 .

It is a d-powerful number, because it can be written as 3⁹ + 4⁸ + 4⁹ + 7² + 2³ + 8 .

It is a junction number, because it is equal to n+sod(n) for n = 347396 and 347405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43425 + ... + 43432.

2³⁴⁷⁴²⁸ is an apocalyptic number.

It is an amenable number.

347428 is a deficient number, since it is larger than the sum of its proper divisors (260578).

347428 is a wasteful number, since it uses less digits than its factorization.

347428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86861 (or 86859 counting only the distinct ones).

The product of its digits is 5376, while the sum is 28.

The square root of 347428 is about 589.4302333610. The cubic root of 347428 is about 70.2999374758.

The spelling of 347428 in words is "three hundred forty-seven thousand, four hundred twenty-eight".