33009402 has 16 divisors (see below), whose sum is σ = 67803552. Its totient is φ = 10705680.

The previous prime is 33009401. The next prime is 33009409. The reversal of 33009402 is 20490033.

It is not an unprimeable number, because it can be changed into a prime (33009401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74124 + ... + 74567.

It is an arithmetic number, because the mean of its divisors is an integer number (4237722).

Almost surely, 2^33009402 is an apocalyptic number.

33009402 is an abundant number, since it is smaller than the sum of its proper divisors (34794150).

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

33009402 is a wasteful number, since it uses less digits than its factorization.

33009402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148733.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 33009402 is about 5745.3809273189. The cubic root of 33009402 is about 320.7838919634.

Adding to 33009402 its reverse (20490033), we get a palindrome (53499435).

It can be divided in two parts, 33009 and 402, that added together give a triangular number (33411 = T₂₅₈).

The spelling of 33009402 in words is "thirty-three million, nine thousand, four hundred two".