33130660 has 12 divisors (see below), whose sum is σ = 69574428. Its totient is φ = 13252256.

The previous prime is 33130639. The next prime is 33130663. The reversal of 33130660 is 6603133.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8608356 + 24522304 = 2934^2 + 4952^2 .

It is not an unprimeable number, because it can be changed into a prime (33130663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 828247 + ... + 828286.

It is an arithmetic number, because the mean of its divisors is an integer number (5797869).

Almost surely, 2^33130660 is an apocalyptic number.

It is an amenable number.

33130660 is an abundant number, since it is smaller than the sum of its proper divisors (36443768).

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

33130660 is a wasteful number, since it uses less digits than its factorization.

33130660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656542 (or 1656540 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 33130660 is about 5755.9239049869. The cubic root of 33130660 is about 321.1762052485.

Adding to 33130660 its reverse (6603133), we get a palindrome (39733793).

The spelling of 33130660 in words is "thirty-three million, one hundred thirty thousand, six hundred sixty".