33540538 has 16 divisors (see below), whose sum is σ = 50964480. Its totient is φ = 16554096.

The previous prime is 33540517. The next prime is 33540539. The reversal of 33540538 is 83504533.

It is a super-2 number, since 2×33540538² = 2249935378658888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33540539) 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, 69783 + ... + 70261.

It is an arithmetic number, because the mean of its divisors is an integer number (3185280).

Almost surely, 2^33540538 is an apocalyptic number.

33540538 is a deficient number, since it is larger than the sum of its proper divisors (17423942).

33540538 is a wasteful number, since it uses less digits than its factorization.

33540538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861.

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 33540538 is about 5791.4193424410. The cubic root of 33540538 is about 322.4952642375.

The spelling of 33540538 in words is "thirty-three million, five hundred forty thousand, five hundred thirty-eight".