33138434 has 16 divisors (see below), whose sum is σ = 57220800. Its totient is φ = 14099184.

The previous prime is 33138419. The next prime is 33138437. The reversal of 33138434 is 43483133.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 33138397 and 33138406.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6569 + ... + 10460.

It is an arithmetic number, because the mean of its divisors is an integer number (3576300).

Almost surely, 2^33138434 is an apocalyptic number.

33138434 is a deficient number, since it is larger than the sum of its proper divisors (24082366).

33138434 is a wasteful number, since it uses less digits than its factorization.

33138434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17177.

The product of its digits is 10368, while the sum is 29.

The square root of 33138434 is about 5756.5991696487. The cubic root of 33138434 is about 321.2013242627.

The spelling of 33138434 in words is "thirty-three million, one hundred thirty-eight thousand, four hundred thirty-four".