33200145 has 64 divisors (see below), whose sum is σ = 65433600. Its totient is φ = 15837120.

The previous prime is 33200143. The next prime is 33200149. The reversal of 33200145 is 54100233.

It is not a de Polignac number, because 33200145 - 2¹ = 33200143 is a prime.

It is a super-2 number, since 2×33200145² = 2204499256042050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33200143) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 117174 + ... + 117456.

It is an arithmetic number, because the mean of its divisors is an integer number (1022400).

Almost surely, 2^33200145 is an apocalyptic number.

It is an amenable number.

33200145 is a deficient number, since it is larger than the sum of its proper divisors (32233455).

33200145 is a wasteful number, since it uses less digits than its factorization.

33200145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 381 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 33200145 is about 5761.9566989001. The cubic root of 33200145 is about 321.4005829598.

Adding to 33200145 its reverse (54100233), we get a palindrome (87300378).

The spelling of 33200145 in words is "thirty-three million, two hundred thousand, one hundred forty-five".