133283232 has 60 divisors (see below), whose sum is σ = 391989906. Its totient is φ = 44426880.

The previous prime is 133283219. The next prime is 133283243. The reversal of 133283232 is 232382331.

133283232 is a `hidden beast` number, since 1 + 332 + 8 + 323 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 108243216 + 25040016 = 10404^2 + 5004^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 133283196 and 133283205.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 23119 + ... + 28302.

Almost surely, 2^133283232 is an apocalyptic number.

133283232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

133283232 is an abundant number, since it is smaller than the sum of its proper divisors (258706674).

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

133283232 is an equidigital number, since it uses as much as digits as its factorization.

133283232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51443 (or 51426 counting only the distinct ones).

The product of its digits is 5184, while the sum is 27.

The square root of 133283232 is about 11544.8357285844. The cubic root of 133283232 is about 510.8089583721.

Subtracting 133283232 from its reverse (232382331), we obtain a palindrome (99099099).

The spelling of 133283232 in words is "one hundred thirty-three million, two hundred eighty-three thousand, two hundred thirty-two".