133387268 has 24 divisors (see below), whose sum is σ = 273283584. Its totient is φ = 55771200.

The previous prime is 133387249. The next prime is 133387339. The reversal of 133387268 is 862783331.

It is a Harshad number since it is a multiple of its sum of digits (41).

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 in 7 ways as a sum of consecutive naturals, for example, 56948 + ... + 59243.

It is an arithmetic number, because the mean of its divisors is an integer number (11386816).

Almost surely, 2^133387268 is an apocalyptic number.

It is an amenable number.

133387268 is an abundant number, since it is smaller than the sum of its proper divisors (139896316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133387268 is a wasteful number, since it uses less digits than its factorization.

133387268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116243 (or 116241 counting only the distinct ones).

The product of its digits is 145152, while the sum is 41.

The square root of 133387268 is about 11549.3405872370. The cubic root of 133387268 is about 510.9418300493.

The spelling of 133387268 in words is "one hundred thirty-three million, three hundred eighty-seven thousand, two hundred sixty-eight".