3646128 has 40 divisors (see below), whose sum is σ = 9678448. Its totient is φ = 1181952.

The previous prime is 3646117. The next prime is 3646129. The reversal of 3646128 is 8216463.

3646128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 3646095 and 3646104.

It is not an unprimeable number, because it can be changed into a prime (3646129) 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 in 7 ways as a sum of consecutive naturals, for example, 750 + ... + 2802.

Almost surely, 2^3646128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3646128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4839224).

3646128 is an abundant number, since it is smaller than the sum of its proper divisors (6032320).

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

3646128 is a wasteful number, since it uses less digits than its factorization.

3646128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101 (or 2095 counting only the distinct ones).

The product of its digits is 6912, while the sum is 30.

The square root of 3646128 is about 1909.4836998519. The cubic root of 3646128 is about 153.9137088958.

It can be divided in two parts, 36 and 46128, that added together give a palindrome (46164).

The spelling of 3646128 in words is "three million, six hundred forty-six thousand, one hundred twenty-eight".