133767864 has 24 divisors (see below), whose sum is σ = 362288160. Its totient is φ = 44589264.

The previous prime is 133767859. The next prime is 133767877. The reversal of 133767864 is 468767331.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 928872 + ... + 929015.

It is an arithmetic number, because the mean of its divisors is an integer number (15095340).

Almost surely, 2^133767864 is an apocalyptic number.

It is an amenable number.

133767864 is an abundant number, since it is smaller than the sum of its proper divisors (228520296).

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

133767864 is a wasteful number, since it uses less digits than its factorization.

133767864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857899 (or 1857892 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 133767864 is about 11565.8058085029. The cubic root of 133767864 is about 511.4273280484.

The spelling of 133767864 in words is "one hundred thirty-three million, seven hundred sixty-seven thousand, eight hundred sixty-four".