135571936 has 48 divisors (see below), whose sum is σ = 280433664. Its totient is φ = 64392064.

The previous prime is 135571921. The next prime is 135571937. The reversal of 135571936 is 639175531.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135571937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122361 + ... + 123463.

It is an arithmetic number, because the mean of its divisors is an integer number (5842368).

Almost surely, 2^135571936 is an apocalyptic number.

135571936 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 135571936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140216832).

135571936 is an abundant number, since it is smaller than the sum of its proper divisors (144861728).

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

135571936 is a wasteful number, since it uses less digits than its factorization.

135571936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303 (or 1295 counting only the distinct ones).

The product of its digits is 85050, while the sum is 40.

The square root of 135571936 is about 11643.5362326056. The cubic root of 135571936 is about 513.7162054323.

The spelling of 135571936 in words is "one hundred thirty-five million, five hundred seventy-one thousand, nine hundred thirty-six".