135534816 has 96 divisors (see below), whose sum is σ = 399409920. Its totient is φ = 44710272.

The previous prime is 135534787. The next prime is 135534823. The reversal of 135534816 is 618435531.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 88231 + ... + 89753.

It is an arithmetic number, because the mean of its divisors is an integer number (4160520).

Almost surely, 2^135534816 is an apocalyptic number.

135534816 is a gapful number since it is divisible by the number (16) 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 135534816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (199704960).

135534816 is an abundant number, since it is smaller than the sum of its proper divisors (263875104).

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

135534816 is a wasteful number, since it uses less digits than its factorization.

135534816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645 (or 1631 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 135534816 is about 11641.9421060234. The cubic root of 135534816 is about 513.6693154766.

The spelling of 135534816 in words is "one hundred thirty-five million, five hundred thirty-four thousand, eight hundred sixteen".