33028138 has 32 divisors (see below), whose sum is σ = 60746112. Its totient is φ = 13252800.

The previous prime is 33028133. The next prime is 33028139. The reversal of 33028138 is 83182033.

It is not an unprimeable number, because it can be changed into a prime (33028133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4068 + ... + 9088.

It is an arithmetic number, because the mean of its divisors is an integer number (1898316).

Almost surely, 2^33028138 is an apocalyptic number.

33028138 is a deficient number, since it is larger than the sum of its proper divisors (27717974).

33028138 is a wasteful number, since it uses less digits than its factorization.

33028138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5070.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 33028138 is about 5747.0112232360. The cubic root of 33028138 is about 320.8445723542.

The spelling of 33028138 in words is "thirty-three million, twenty-eight thousand, one hundred thirty-eight".