33280809 has 8 divisors (see below), whose sum is σ = 44544192. Its totient is φ = 22102320.

The previous prime is 33280801. The next prime is 33280817. The reversal of 33280809 is 90808233.

It is an interprime number because it is at equal distance from previous prime (33280801) and next prime (33280817).

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

It is not a de Polignac number, because 33280809 - 2³ = 33280801 is a prime.

It is a super-2 number, since 2×33280809² = 2215224495388962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33280809.

It is not an unprimeable number, because it can be changed into a prime (33280801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20302 + ... + 21879.

It is an arithmetic number, because the mean of its divisors is an integer number (5568024).

Almost surely, 2^33280809 is an apocalyptic number.

It is an amenable number.

33280809 is a deficient number, since it is larger than the sum of its proper divisors (11263383).

33280809 is a wasteful number, since it uses less digits than its factorization.

33280809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42447.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 33280809 is about 5768.9521578879. The cubic root of 33280809 is about 321.6606670499.

The spelling of 33280809 in words is "thirty-three million, two hundred eighty thousand, eight hundred nine".