33260720 has 20 divisors (see below), whose sum is σ = 77331360. Its totient is φ = 13304256.

The previous prime is 33260713. The next prime is 33260729. The reversal of 33260720 is 2706233.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×33260720² = 2212550989836800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33260729) 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 3 ways as a sum of consecutive naturals, for example, 207800 + ... + 207959.

It is an arithmetic number, because the mean of its divisors is an integer number (3866568).

Almost surely, 2^33260720 is an apocalyptic number.

It is an amenable number.

33260720 is an abundant number, since it is smaller than the sum of its proper divisors (44070640).

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

33260720 is a wasteful number, since it uses less digits than its factorization.

33260720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415772 (or 415766 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 33260720 is about 5767.2107643123. The cubic root of 33260720 is about 321.5959336301.

Adding to 33260720 its reverse (2706233), we get a palindrome (35966953).

The spelling of 33260720 in words is "thirty-three million, two hundred sixty thousand, seven hundred twenty".