33140645 has 8 divisors (see below), whose sum is σ = 39870360. Its totient is φ = 26444800.

The previous prime is 33140623. The next prime is 33140647. The reversal of 33140645 is 54604133.

It can be written as a sum of positive squares in 4 ways, for example, as 20367169 + 12773476 = 4513^2 + 3574^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 33140645 - 2¹² = 33136549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33140647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6260 + ... + 10269.

It is an arithmetic number, because the mean of its divisors is an integer number (4983795).

Almost surely, 2^33140645 is an apocalyptic number.

It is an amenable number.

33140645 is a deficient number, since it is larger than the sum of its proper divisors (6729715).

33140645 is a wasteful number, since it uses less digits than its factorization.

33140645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16935.

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 33140645 is about 5756.7912069138. The cubic root of 33140645 is about 321.2084676331.

Adding to 33140645 its reverse (54604133), we get a palindrome (87744778).

The spelling of 33140645 in words is "thirty-three million, one hundred forty thousand, six hundred forty-five".