135393280 has 104 divisors (see below), whose sum is σ = 355030704. Its totient is φ = 49152000.

The previous prime is 135393263. The next prime is 135393289. The reversal of 135393280 is 82393531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135393289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224980 + ... + 225580.

Almost surely, 2^135393280 is an apocalyptic number.

135393280 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 135393280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177515352).

135393280 is an abundant number, since it is smaller than the sum of its proper divisors (219637424).

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

135393280 is an equidigital number, since it uses as much as digits as its factorization.

135393280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 135393280 is about 11635.8618073609. The cubic root of 135393280 is about 513.4904487117.

The spelling of 135393280 in words is "one hundred thirty-five million, three hundred ninety-three thousand, two hundred eighty".