133867712 has 112 divisors (see below), whose sum is σ = 307238400. Its totient is φ = 57308160.

The previous prime is 133867667. The next prime is 133867717. The reversal of 133867712 is 217768331.

It is a super-2 number, since 2×133867712² = 35841128632229888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133867717) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1612823 + ... + 1612905.

It is an arithmetic number, because the mean of its divisors is an integer number (2743200).

Almost surely, 2^133867712 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 133867712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153619200).

133867712 is an abundant number, since it is smaller than the sum of its proper divisors (173370688).

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

133867712 is a wasteful number, since it uses less digits than its factorization.

133867712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214 (or 204 counting only the distinct ones).

The product of its digits is 42336, while the sum is 38.

The square root of 133867712 is about 11570.1215205373. The cubic root of 133867712 is about 511.5545441927.

The spelling of 133867712 in words is "one hundred thirty-three million, eight hundred sixty-seven thousand, seven hundred twelve".