1709428 has 12 divisors (see below), whose sum is σ = 3418912. Its totient is φ = 732600.

The previous prime is 1709387. The next prime is 1709443. The reversal of 1709428 is 8249071.

1709428 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 1709428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30498 + ... + 30553.

2^1709428 is an apocalyptic number.

It is an amenable number.

1709428 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1709428 is a wasteful number, since it uses less digits than its factorization.

1709428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61062 (or 61060 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1709428 is about 1307.4509551031. The cubic root of 1709428 is about 119.5685431601.

The spelling of 1709428 in words is "one million, seven hundred nine thousand, four hundred twenty-eight".