133239612 has 48 divisors (see below), whose sum is σ = 350106624. Its totient is φ = 39072000.

The previous prime is 133239611. The next prime is 133239653. The reversal of 133239612 is 216932331.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 133239612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133239611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12189 + ... + 20372.

It is an arithmetic number, because the mean of its divisors is an integer number (7293888).

Almost surely, 2^133239612 is an apocalyptic number.

133239612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133239612 is an abundant number, since it is smaller than the sum of its proper divisors (216867012).

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

133239612 is a wasteful number, since it uses less digits than its factorization.

133239612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32610 (or 32608 counting only the distinct ones).

The product of its digits is 5832, while the sum is 30.

The square root of 133239612 is about 11542.9464176180. The cubic root of 133239612 is about 510.7532276359.

The spelling of 133239612 in words is "one hundred thirty-three million, two hundred thirty-nine thousand, six hundred twelve".