133285747 has 8 divisors (see below), whose sum is σ = 152533856. Its totient is φ = 114089472.

The previous prime is 133285739. The next prime is 133285751. The reversal of 133285747 is 747582331.

It is a happy number.

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

It is not a de Polignac number, because 133285747 - 2³ = 133285739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133285717) 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, 7278 + ... + 17875.

It is an arithmetic number, because the mean of its divisors is an integer number (19066732).

Almost surely, 2^133285747 is an apocalyptic number.

133285747 is a deficient number, since it is larger than the sum of its proper divisors (19248109).

133285747 is an equidigital number, since it uses as much as digits as its factorization.

133285747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25917.

The product of its digits is 141120, while the sum is 40.

The square root of 133285747 is about 11544.9446512316. The cubic root of 133285747 is about 510.8121712705.

The spelling of 133285747 in words is "one hundred thirty-three million, two hundred eighty-five thousand, seven hundred forty-seven".