33378380 has 24 divisors (see below), whose sum is σ = 80108448. Its totient is φ = 11443968.

The previous prime is 33378377. The next prime is 33378409. The reversal of 33378380 is 8387333.

It is a super-2 number, since 2×33378380² = 2228232502848800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 33378380.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119069 + ... + 119348.

It is an arithmetic number, because the mean of its divisors is an integer number (3337852).

Almost surely, 2^33378380 is an apocalyptic number.

It is an amenable number.

33378380 is an abundant number, since it is smaller than the sum of its proper divisors (46730068).

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

33378380 is a wasteful number, since it uses less digits than its factorization.

33378380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238433 (or 238431 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 33378380 is about 5777.4025305495. The cubic root of 33378380 is about 321.9747032067.

The spelling of 33378380 in words is "thirty-three million, three hundred seventy-eight thousand, three hundred eighty".