135783280 has 20 divisors (see below), whose sum is σ = 315696312. Its totient is φ = 54313280.

The previous prime is 135783259. The next prime is 135783287. The reversal of 135783280 is 82387531.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135783287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 848566 + ... + 848725.

Almost surely, 2^135783280 is an apocalyptic number.

135783280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135783280 is an abundant number, since it is smaller than the sum of its proper divisors (179913032).

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

135783280 is a wasteful number, since it uses less digits than its factorization.

135783280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697304 (or 1697298 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 135783280 is about 11652.6082917088. The cubic root of 135783280 is about 513.9830120504.

The spelling of 135783280 in words is "one hundred thirty-five million, seven hundred eighty-three thousand, two hundred eighty".