3666128 has 10 divisors (see below), whose sum is σ = 7103154. Its totient is φ = 1833056.

The previous prime is 3666127. The next prime is 3666139. The reversal of 3666128 is 8216663.

It can be written as a sum of positive squares in only one way, i.e., 2729104 + 937024 = 1652^2 + 968^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 3666094 and 3666103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3666121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114551 + ... + 114582.

Almost surely, 2^3666128 is an apocalyptic number.

It is an amenable number.

3666128 is a deficient number, since it is larger than the sum of its proper divisors (3437026).

3666128 is a wasteful number, since it uses less digits than its factorization.

3666128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229141 (or 229135 counting only the distinct ones).

The product of its digits is 10368, while the sum is 32.

The square root of 3666128 is about 1914.7135556004. The cubic root of 3666128 is about 154.1946153696.

The spelling of 3666128 in words is "three million, six hundred sixty-six thousand, one hundred twenty-eight".