133475636 has 24 divisors (see below), whose sum is σ = 282655296. Its totient is φ = 53838720.

The previous prime is 133475611. The next prime is 133475651. The reversal of 133475636 is 636574331.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 133475636.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139730 + ... + 140681.

It is an arithmetic number, because the mean of its divisors is an integer number (11777304).

Almost surely, 2^133475636 is an apocalyptic number.

It is an amenable number.

133475636 is an abundant number, since it is smaller than the sum of its proper divisors (149179660).

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

133475636 is a wasteful number, since it uses less digits than its factorization.

133475636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280439 (or 280437 counting only the distinct ones).

The product of its digits is 136080, while the sum is 38.

The square root of 133475636 is about 11553.1656267882. The cubic root of 133475636 is about 511.0546367694.

The spelling of 133475636 in words is "one hundred thirty-three million, four hundred seventy-five thousand, six hundred thirty-six".