33720052 has 6 divisors (see below), whose sum is σ = 59010098. Its totient is φ = 16860024.

The previous prime is 33719981. The next prime is 33720067. The reversal of 33720052 is 25002733.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 32216976 + 1503076 = 5676^2 + 1226^2 .

It is a super-3 number, since 3×33720052³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4215003 + ... + 4215010.

Almost surely, 2^33720052 is an apocalyptic number.

It is an amenable number.

33720052 is a deficient number, since it is larger than the sum of its proper divisors (25290046).

33720052 is a wasteful number, since it uses less digits than its factorization.

33720052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8430017 (or 8430015 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 33720052 is about 5806.8969338193. The cubic root of 33720052 is about 323.0695885363.

Adding to 33720052 its reverse (25002733), we get a palindrome (58722785).

The spelling of 33720052 in words is "thirty-three million, seven hundred twenty thousand, fifty-two".