133633140 has 48 divisors (see below), whose sum is σ = 381241728. Its totient is φ = 34962304.

The previous prime is 133633139. The next prime is 133633169. The reversal of 133633140 is 41336331.

It is a super-2 number, since 2×133633140² = 35715632212519200, 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 133633140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17832 + ... + 24191.

It is an arithmetic number, because the mean of its divisors is an integer number (7942536).

Almost surely, 2^133633140 is an apocalyptic number.

133633140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133633140 is an abundant number, since it is smaller than the sum of its proper divisors (247608588).

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

133633140 is a wasteful number, since it uses less digits than its factorization.

133633140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42088 (or 42086 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 24.

The square root of 133633140 is about 11559.9801037891. The cubic root of 133633140 is about 511.2555760855.

Adding to 133633140 its reverse (41336331), we get a palindrome (174969471).

The spelling of 133633140 in words is "one hundred thirty-three million, six hundred thirty-three thousand, one hundred forty".