33072641 has 4 divisors (see below), whose sum is σ = 37797312. Its totient is φ = 28347972.

The previous prime is 33072623. The next prime is 33072647. The reversal of 33072641 is 14627033.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 33072641 - 2¹⁰ = 33071617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33072641.

It is not an unprimeable number, because it can be changed into a prime (33072647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2362325 + ... + 2362338.

It is an arithmetic number, because the mean of its divisors is an integer number (9449328).

Almost surely, 2^33072641 is an apocalyptic number.

It is an amenable number.

33072641 is a deficient number, since it is larger than the sum of its proper divisors (4724671).

33072641 is an equidigital number, since it uses as much as digits as its factorization.

33072641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4724670.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 33072641 is about 5750.8817584784. The cubic root of 33072641 is about 320.9886125430.

Adding to 33072641 its reverse (14627033), we get a palindrome (47699674).

The spelling of 33072641 in words is "thirty-three million, seventy-two thousand, six hundred forty-one".