133453328 has 10 divisors (see below), whose sum is σ = 258565854. Its totient is φ = 66726656.

The previous prime is 133453303. The next prime is 133453343. The reversal of 133453328 is 823354331.

It can be written as a sum of positive squares in only one way, i.e., 133448704 + 4624 = 11552^2 + 68^2 .

It is a junction number, because it is equal to n+sod(n) for n = 133453294 and 133453303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4170401 + ... + 4170432.

Almost surely, 2^133453328 is an apocalyptic number.

It is an amenable number.

133453328 is a deficient number, since it is larger than the sum of its proper divisors (125112526).

133453328 is an equidigital number, since it uses as much as digits as its factorization.

133453328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8340841 (or 8340835 counting only the distinct ones).

The product of its digits is 25920, while the sum is 32.

The square root of 133453328 is about 11552.2001367705. The cubic root of 133453328 is about 511.0261640524.

The spelling of 133453328 in words is "one hundred thirty-three million, four hundred fifty-three thousand, three hundred twenty-eight".