33720382 has 4 divisors (see below), whose sum is σ = 50580576. Its totient is φ = 16860190.

The previous prime is 33720377. The next prime is 33720389. The reversal of 33720382 is 28302733.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×33720382² = 2274128324451848, which contains 22 as substring.

It is a plaindrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 33720382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33720389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8430094 + ... + 8430097.

It is an arithmetic number, because the mean of its divisors is an integer number (12645144).

Almost surely, 2^33720382 is an apocalyptic number.

33720382 is a deficient number, since it is larger than the sum of its proper divisors (16860194).

33720382 is a wasteful number, since it uses less digits than its factorization.

33720382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16860193.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 33720382 is about 5806.9253482372. The cubic root of 33720382 is about 323.0706424356.

The spelling of 33720382 in words is "thirty-three million, seven hundred twenty thousand, three hundred eighty-two".