135283280 has 80 divisors (see below), whose sum is σ = 363351744. Its totient is φ = 46295040.

The previous prime is 135283273. The next prime is 135283301. The reversal of 135283280 is 82382531.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10439 + ... + 19481.

Almost surely, 2^135283280 is an apocalyptic number.

135283280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135283280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181675872).

135283280 is an abundant number, since it is smaller than the sum of its proper divisors (228068464).

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

135283280 is a wasteful number, since it uses less digits than its factorization.

135283280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9084 (or 9078 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 135283280 is about 11631.1340805615. The cubic root of 135283280 is about 513.3513496047.

The spelling of 135283280 in words is "one hundred thirty-five million, two hundred eighty-three thousand, two hundred eighty".