133288417 has 8 divisors (see below), whose sum is σ = 136739232. Its totient is φ = 129847200.

The previous prime is 133288403. The next prime is 133288423. The reversal of 133288417 is 714882331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133288417 - 2¹⁹ = 132764129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133288457) 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, 31942 + ... + 35872.

It is an arithmetic number, because the mean of its divisors is an integer number (17092404).

Almost surely, 2^133288417 is an apocalyptic number.

It is an amenable number.

133288417 is a deficient number, since it is larger than the sum of its proper divisors (3450815).

133288417 is an equidigital number, since it uses as much as digits as its factorization.

133288417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4799.

The product of its digits is 32256, while the sum is 37.

The square root of 133288417 is about 11545.0602856806. The cubic root of 133288417 is about 510.8155821363.

The spelling of 133288417 in words is "one hundred thirty-three million, two hundred eighty-eight thousand, four hundred seventeen".