735428 has 12 divisors (see below), whose sum is σ = 1311660. Its totient is φ = 360672.

The previous prime is 735421. The next prime is 735431. The reversal of 735428 is 824537.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 228484 + 506944 = 478^2 + 712^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 735428.

It is not an unprimeable number, because it can be changed into a prime (735421) by changing a digit.

735428 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 3 ways as a sum of consecutive naturals, for example, 1523 + ... + 1946.

It is an arithmetic number, because the mean of its divisors is an integer number (109305).

2⁷³⁵⁴²⁸ is an apocalyptic number.

It is an amenable number.

735428 is a deficient number, since it is larger than the sum of its proper divisors (576232).

735428 is a wasteful number, since it uses less digits than its factorization.

735428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3526 (or 3524 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 735428 is about 857.5709883153. The cubic root of 735428 is about 90.2637530420.

The spelling of 735428 in words is "seven hundred thirty-five thousand, four hundred twenty-eight".