33138435 has 32 divisors (see below), whose sum is σ = 58413312. Its totient is φ = 15908480.

The previous prime is 33138419. The next prime is 33138437. The reversal of 33138435 is 53483133.

It is not a de Polignac number, because 33138435 - 2⁴ = 33138419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (33138437) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16717 + ... + 18593.

It is an arithmetic number, because the mean of its divisors is an integer number (1825416).

Almost surely, 2^33138435 is an apocalyptic number.

33138435 is a deficient number, since it is larger than the sum of its proper divisors (25274877).

33138435 is a wasteful number, since it uses less digits than its factorization.

33138435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003.

The product of its digits is 12960, while the sum is 30.

The square root of 33138435 is about 5756.5992565055. The cubic root of 33138435 is about 321.2013274936.

The spelling of 33138435 in words is "thirty-three million, one hundred thirty-eight thousand, four hundred thirty-five".