133229648 has 10 divisors (see below), whose sum is σ = 258132474. Its totient is φ = 66614816.

The previous prime is 133229617. The next prime is 133229669. The reversal of 133229648 is 846922331.

It can be written as a sum of positive squares in only one way, i.e., 81504784 + 51724864 = 9028^2 + 7192^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4163411 + ... + 4163442.

Almost surely, 2^133229648 is an apocalyptic number.

It is an amenable number.

133229648 is a deficient number, since it is larger than the sum of its proper divisors (124902826).

133229648 is an equidigital number, since it uses as much as digits as its factorization.

133229648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8326861 (or 8326855 counting only the distinct ones).

The product of its digits is 62208, while the sum is 38.

The square root of 133229648 is about 11542.5148039758. The cubic root of 133229648 is about 510.7404955063.

The spelling of 133229648 in words is "one hundred thirty-three million, two hundred twenty-nine thousand, six hundred forty-eight".