33540012 has 36 divisors (see below), whose sum is σ = 92490216. Its totient is φ = 10163520.

The previous prime is 33540011. The next prime is 33540053. The reversal of 33540012 is 21004533.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×33540012² = 2249864809920288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (33540011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41953 + ... + 42744.

Almost surely, 2^33540012 is an apocalyptic number.

It is an amenable number.

33540012 is an abundant number, since it is smaller than the sum of its proper divisors (58950204).

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

33540012 is a wasteful number, since it uses less digits than its factorization.

33540012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84718 (or 84713 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 33540012 is about 5791.3739302518. The cubic root of 33540012 is about 322.4935783830.

Adding to 33540012 its reverse (21004533), we get a palindrome (54544545).

It can be divided in two parts, 33 and 540012, that added together give a palindrome (540045).

The spelling of 33540012 in words is "thirty-three million, five hundred forty thousand, twelve".