33640034 has 4 divisors (see below), whose sum is σ = 50460054. Its totient is φ = 16820016.

The previous prime is 33640031. The next prime is 33640063. The reversal of 33640034 is 43004633.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43004633 = 7 ⋅6143519.

It can be written as a sum of positive squares in only one way, i.e., 26061025 + 7579009 = 5105^2 + 2753^2 .

It is a super-2 number, since 2×33640034² = 2263303775042312, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 33639991 and 33640009.

It is not an unprimeable number, because it can be changed into a prime (33640031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8410007 + ... + 8410010.

Almost surely, 2^33640034 is an apocalyptic number.

33640034 is a deficient number, since it is larger than the sum of its proper divisors (16820020).

33640034 is a wasteful number, since it uses less digits than its factorization.

33640034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16820019.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 33640034 is about 5800.0029310337. The cubic root of 33640034 is about 322.8138370737.

Adding to 33640034 its reverse (43004633), we get a palindrome (76644667).

The spelling of 33640034 in words is "thirty-three million, six hundred forty thousand, thirty-four".