33069720 has 32 divisors (see below), whose sum is σ = 99209520. Its totient is φ = 8818560.

The previous prime is 33069719. The next prime is 33069727. The reversal of 33069720 is 2796033.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33069727) by changing a digit.

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, 137671 + ... + 137910.

Almost surely, 2^33069720 is an apocalyptic number.

33069720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

33069720 is an abundant number, since it is smaller than the sum of its proper divisors (66139800).

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

33069720 is a wasteful number, since it uses less digits than its factorization.

33069720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275595 (or 275591 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 33069720 is about 5750.6277918154. The cubic root of 33069720 is about 320.9791622812.

The spelling of 33069720 in words is "thirty-three million, sixty-nine thousand, seven hundred twenty".