3133640 has 16 divisors (see below), whose sum is σ = 7050780. Its totient is φ = 1253440.

The previous prime is 3133639. The next prime is 3133643. The reversal of 3133640 is 463313.

3133640 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 2 ways, for example, as 3118756 + 14884 = 1766^2 + 122^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (3133643) 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 3 ways as a sum of consecutive naturals, for example, 39131 + ... + 39210.

Almost surely, 2^3133640 is an apocalyptic number.

It is an amenable number.

3133640 is an abundant number, since it is smaller than the sum of its proper divisors (3917140).

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

3133640 is a wasteful number, since it uses less digits than its factorization.

3133640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78352 (or 78348 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 3133640 is about 1770.2090272055. The cubic root of 3133640 is about 146.3355016632.

Adding to 3133640 its reverse (463313), we get a palindrome (3596953).

It can be divided in two parts, 3133 and 640, that added together give a palindrome (3773).

The spelling of 3133640 in words is "three million, one hundred thirty-three thousand, six hundred forty".