33540212 has 12 divisors (see below), whose sum is σ = 58746240. Its totient is φ = 16755576.

The previous prime is 33540209. The next prime is 33540229. The reversal of 33540212 is 21204533.

It is a happy number.

It is a super-2 number, since 2×33540212² = 2249891642009888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2843 + ... + 8669.

It is an arithmetic number, because the mean of its divisors is an integer number (4895520).

Almost surely, 2^33540212 is an apocalyptic number.

It is an amenable number.

33540212 is a deficient number, since it is larger than the sum of its proper divisors (25206028).

33540212 is a wasteful number, since it uses less digits than its factorization.

33540212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270 (or 7268 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 33540212 is about 5791.3911972858. The cubic root of 33540212 is about 322.4942193944.

Adding to 33540212 its reverse (21204533), we get a palindrome (54744745).

The spelling of 33540212 in words is "thirty-three million, five hundred forty thousand, two hundred twelve".