133223660 has 24 divisors (see below), whose sum is σ = 280869120. Its totient is φ = 53080064.

The previous prime is 133223653. The next prime is 133223669. The reversal of 133223660 is 66322331.

It is not an unprimeable number, because it can be changed into a prime (133223669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7820 + ... + 18099.

It is an arithmetic number, because the mean of its divisors is an integer number (11702880).

Almost surely, 2^133223660 is an apocalyptic number.

133223660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

133223660 is an abundant number, since it is smaller than the sum of its proper divisors (147645460).

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

133223660 is a wasteful number, since it uses less digits than its factorization.

133223660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26185 (or 26183 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 133223660 is about 11542.2554121801. The cubic root of 133223660 is about 510.7328436561.

Adding to 133223660 its reverse (66322331), we get a palindrome (199545991).

The spelling of 133223660 in words is "one hundred thirty-three million, two hundred twenty-three thousand, six hundred sixty".