133861532 has 18 divisors (see below), whose sum is σ = 272504232. Its totient is φ = 57369144.

The previous prime is 133861531. The next prime is 133861543. The reversal of 133861532 is 235168331.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133861531) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 341288 + ... + 341679.

It is an arithmetic number, because the mean of its divisors is an integer number (15139124).

Almost surely, 2^133861532 is an apocalyptic number.

It is an amenable number.

133861532 is an abundant number, since it is smaller than the sum of its proper divisors (138642700).

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

133861532 is a wasteful number, since it uses less digits than its factorization.

133861532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682985 (or 682976 counting only the distinct ones).

The product of its digits is 12960, while the sum is 32.

The square root of 133861532 is about 11569.8544502513. The cubic root of 133861532 is about 511.5466721035.

The spelling of 133861532 in words is "one hundred thirty-three million, eight hundred sixty-one thousand, five hundred thirty-two".