3705428 has 6 divisors (see below), whose sum is σ = 6484506. Its totient is φ = 1852712.

The previous prime is 3705421. The next prime is 3705431. The reversal of 3705428 is 8245073.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3378244 + 327184 = 1838^2 + 572^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3705428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3705421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 463175 + ... + 463182.

It is an arithmetic number, because the mean of its divisors is an integer number (1080751).

Almost surely, 2^3705428 is an apocalyptic number.

It is an amenable number.

3705428 is a deficient number, since it is larger than the sum of its proper divisors (2779078).

3705428 is a wasteful number, since it uses less digits than its factorization.

3705428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926361 (or 926359 counting only the distinct ones).

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

The square root of 3705428 is about 1924.9488304887. The cubic root of 3705428 is about 154.7436344853.

The spelling of 3705428 in words is "three million, seven hundred five thousand, four hundred twenty-eight".