33290538 has 8 divisors (see below), whose sum is σ = 66581088. Its totient is φ = 11096844.

The previous prime is 33290533. The next prime is 33290561. The reversal of 33290538 is 83509233.

It is a sphenic number, since it is the product of 3 distinct primes.

33290538 is an admirable number.

It is a super-2 number, since 2×33290538² = 2216519840658888, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33290499 and 33290508.

It is not an unprimeable number, because it can be changed into a prime (33290533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2774206 + ... + 2774217.

It is an arithmetic number, because the mean of its divisors is an integer number (8322636).

Almost surely, 2^33290538 is an apocalyptic number.

33290538 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

33290538 is a wasteful number, since it uses less digits than its factorization.

33290538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5548428.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 33290538 is about 5769.7953169935. The cubic root of 33290538 is about 321.6920077518.

The spelling of 33290538 in words is "thirty-three million, two hundred ninety thousand, five hundred thirty-eight".