133975656 has 48 divisors (see below), whose sum is σ = 365283360. Its totient is φ = 44359200.

The previous prime is 133975643. The next prime is 133975687. The reversal of 133975656 is 656579331.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4711 + ... + 17033.

It is an arithmetic number, because the mean of its divisors is an integer number (7610070).

Almost surely, 2^133975656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 133975656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (182641680).

133975656 is an abundant number, since it is smaller than the sum of its proper divisors (231307704).

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

133975656 is a wasteful number, since it uses less digits than its factorization.

133975656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12486 (or 12479 counting only the distinct ones).

The product of its digits is 510300, while the sum is 45.

The square root of 133975656 is about 11574.7853543813. The cubic root of 133975656 is about 511.6920042956.

The spelling of 133975656 in words is "one hundred thirty-three million, nine hundred seventy-five thousand, six hundred fifty-six".