133621852 has 48 divisors (see below), whose sum is σ = 292149760. Its totient is φ = 52062912.

The previous prime is 133621849. The next prime is 133621871. The reversal of 133621852 is 258126331.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 21649 + ... + 27127.

Almost surely, 2^133621852 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133621852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146074880).

133621852 is an abundant number, since it is smaller than the sum of its proper divisors (158527908).

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

133621852 is a wasteful number, since it uses less digits than its factorization.

133621852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5570 (or 5568 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 133621852 is about 11559.4918573439. The cubic root of 133621852 is about 511.2411804163.

The spelling of 133621852 in words is "one hundred thirty-three million, six hundred twenty-one thousand, eight hundred fifty-two".