33720334 has 4 divisors (see below), whose sum is σ = 50580504. Its totient is φ = 16860166.

The previous prime is 33720331. The next prime is 33720341. The reversal of 33720334 is 43302733.

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

It is a super-2 number, since 2×33720334² = 2274121850143112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 33720299 and 33720308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33720331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8430082 + ... + 8430085.

It is an arithmetic number, because the mean of its divisors is an integer number (12645126).

Almost surely, 2^33720334 is an apocalyptic number.

33720334 is a deficient number, since it is larger than the sum of its proper divisors (16860170).

33720334 is a wasteful number, since it uses less digits than its factorization.

33720334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16860169.

The product of its (nonzero) digits is 4536, while the sum is 25.

The square root of 33720334 is about 5806.9212152396. The cubic root of 33720334 is about 323.0704891416.

The spelling of 33720334 in words is "thirty-three million, seven hundred twenty thousand, three hundred thirty-four".