3689428 has 6 divisors (see below), whose sum is σ = 6456506. Its totient is φ = 1844712.

The previous prime is 3689423. The next prime is 3689461. The reversal of 3689428 is 8249863.

3689428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3617604 + 71824 = 1902^2 + 268^2 .

It is a super-2 number, since 2×3689428² = 27223757934368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3689423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 461175 + ... + 461182.

Almost surely, 2^3689428 is an apocalyptic number.

It is an amenable number.

3689428 is a deficient number, since it is larger than the sum of its proper divisors (2767078).

3689428 is a wasteful number, since it uses less digits than its factorization.

3689428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922361 (or 922359 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 3689428 is about 1920.7883798066. The cubic root of 3689428 is about 154.5205859954.

The spelling of 3689428 in words is "three million, six hundred eighty-nine thousand, four hundred twenty-eight".