33130540 has 24 divisors (see below), whose sum is σ = 71456112. Its totient is φ = 12893760.

The previous prime is 33130523. The next prime is 33130541. The reversal of 33130540 is 4503133.

It is not an unprimeable number, because it can be changed into a prime (33130541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21646 + ... + 23125.

It is an arithmetic number, because the mean of its divisors is an integer number (2977338).

Almost surely, 2^33130540 is an apocalyptic number.

It is an amenable number.

33130540 is an abundant number, since it is smaller than the sum of its proper divisors (38325572).

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

33130540 is a wasteful number, since it uses less digits than its factorization.

33130540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44817 (or 44815 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 33130540 is about 5755.9134809342. The cubic root of 33130540 is about 321.1758174789.

Adding to 33130540 its reverse (4503133), we get a palindrome (37633673).

It can be divided in two parts, 33130 and 540, that added together give a triangular number (33670 = T₂₅₉).

The spelling of 33130540 in words is "thirty-three million, one hundred thirty thousand, five hundred forty".