133257328 has 10 divisors (see below), whose sum is σ = 258186104. Its totient is φ = 66628656.

The previous prime is 133257307. The next prime is 133257353. The reversal of 133257328 is 823752331.

It is a junction number, because it is equal to n+sod(n) for n = 133257293 and 133257302.

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, 4164276 + ... + 4164307.

Almost surely, 2^133257328 is an apocalyptic number.

It is an amenable number.

133257328 is a deficient number, since it is larger than the sum of its proper divisors (124928776).

133257328 is an equidigital number, since it uses as much as digits as its factorization.

133257328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8328591 (or 8328585 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 133257328 is about 11543.7137871657. The cubic root of 133257328 is about 510.7758638050.

The spelling of 133257328 in words is "one hundred thirty-three million, two hundred fifty-seven thousand, three hundred twenty-eight".