133785708 has 96 divisors (see below), whose sum is σ = 373309440. Its totient is φ = 36486720.

The previous prime is 133785679. The next prime is 133785709. The reversal of 133785708 is 807587331.

It is a super-2 number, since 2×133785708² = 35797231330122528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 133785708.

It is not an unprimeable number, because it can be changed into a prime (133785709) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 215823 + ... + 216441.

It is an arithmetic number, because the mean of its divisors is an integer number (3888640).

Almost surely, 2^133785708 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 133785708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (186654720).

133785708 is an abundant number, since it is smaller than the sum of its proper divisors (239523732).

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

133785708 is a wasteful number, since it uses less digits than its factorization.

133785708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747 (or 745 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 133785708 is about 11566.5771946588. The cubic root of 133785708 is about 511.4500676990.

The spelling of 133785708 in words is "one hundred thirty-three million, seven hundred eighty-five thousand, seven hundred eight".