33340540 has 48 divisors (see below), whose sum is σ = 71971200. Its totient is φ = 12969792.

The previous prime is 33340529. The next prime is 33340543. The reversal of 33340540 is 4504333.

It is a super-2 number, since 2×33340540² = 2223183214983200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33340543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186171 + ... + 186349.

It is an arithmetic number, because the mean of its divisors is an integer number (1499400).

Almost surely, 2^33340540 is an apocalyptic number.

It is an amenable number.

33340540 is an abundant number, since it is smaller than the sum of its proper divisors (38630660).

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

33340540 is a wasteful number, since it uses less digits than its factorization.

33340540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 33340540 is about 5774.1267738074. The cubic root of 33340540 is about 321.8529863978.

Adding to 33340540 its reverse (4504333), we get a palindrome (37844873).

The spelling of 33340540 in words is "thirty-three million, three hundred forty thousand, five hundred forty".