133005220 has 24 divisors (see below), whose sum is σ = 279720000. Its totient is φ = 53124192.

The previous prime is 133005211. The next prime is 133005241. The reversal of 133005220 is 22500331.

It is a junction number, because it is equal to n+sod(n) for n = 133005194 and 133005203.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10281 + ... + 19279.

It is an arithmetic number, because the mean of its divisors is an integer number (11655000).

Almost surely, 2^133005220 is an apocalyptic number.

133005220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133005220 is an abundant number, since it is smaller than the sum of its proper divisors (146714780).

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

133005220 is a wasteful number, since it uses less digits than its factorization.

133005220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9747 (or 9745 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 133005220 is about 11532.7889081523. The cubic root of 133005220 is about 510.4535501395.

Adding to 133005220 its reverse (22500331), we get a palindrome (155505551).

It can be divided in two parts, 133005 and 220, that added together give a square (133225 = 365²).

The spelling of 133005220 in words is "one hundred thirty-three million, five thousand, two hundred twenty".