133156632 has 128 divisors (see below), whose sum is σ = 398361600. Its totient is φ = 36288000.

The previous prime is 133156619. The next prime is 133156669. The reversal of 133156632 is 236651331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 133156632.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 735582 + ... + 735762.

It is an arithmetic number, because the mean of its divisors is an integer number (3112200).

Almost surely, 2^133156632 is an apocalyptic number.

133156632 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133156632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199180800).

133156632 is an abundant number, since it is smaller than the sum of its proper divisors (265204968).

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

133156632 is a wasteful number, since it uses less digits than its factorization.

133156632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 373 counting only the distinct ones).

The product of its digits is 9720, while the sum is 30.

The square root of 133156632 is about 11539.3514549129. The cubic root of 133156632 is about 510.6471753300.

The spelling of 133156632 in words is "one hundred thirty-three million, one hundred fifty-six thousand, six hundred thirty-two".