33378369 has 8 divisors (see below), whose sum is σ = 45068160. Its totient is φ = 21970416.

The previous prime is 33378349. The next prime is 33378377. The reversal of 33378369 is 96387333.

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

It is not a de Polignac number, because 33378369 - 2⁸ = 33378113 is a prime.

It is a super-2 number, since 2×33378369² = 2228231034200322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 33378369.

It is not an unprimeable number, because it can be changed into a prime (33378349) 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, 70182 + ... + 70655.

It is an arithmetic number, because the mean of its divisors is an integer number (5633520).

Almost surely, 2^33378369 is an apocalyptic number.

It is an amenable number.

33378369 is a deficient number, since it is larger than the sum of its proper divisors (11689791).

33378369 is a wasteful number, since it uses less digits than its factorization.

33378369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140919.

The product of its digits is 244944, while the sum is 42.

The square root of 33378369 is about 5777.4015785645. The cubic root of 33378369 is about 321.9746678373.

The spelling of 33378369 in words is "thirty-three million, three hundred seventy-eight thousand, three hundred sixty-nine".