33642012 has 24 divisors (see below), whose sum is σ = 78663312. Its totient is φ = 11190400.

The previous prime is 33641969. The next prime is 33642041. The reversal of 33642012 is 21024633.

It is a happy number.

It is a super-2 number, since 2×33642012² = 2263569942816288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 33642012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3562 + ... + 8942.

It is an arithmetic number, because the mean of its divisors is an integer number (3277638).

Almost surely, 2^33642012 is an apocalyptic number.

It is an amenable number.

33642012 is an abundant number, since it is smaller than the sum of its proper divisors (45021300).

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

33642012 is a wasteful number, since it uses less digits than its factorization.

33642012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5909 (or 5907 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 33642012 is about 5800.1734456825. The cubic root of 33642012 is about 322.8201639921.

Adding to 33642012 its reverse (21024633), we get a palindrome (54666645).

The spelling of 33642012 in words is "thirty-three million, six hundred forty-two thousand, twelve".