135809652 has 96 divisors (see below), whose sum is σ = 359783424. Its totient is φ = 39513600.

The previous prime is 135809623. The next prime is 135809669. The reversal of 135809652 is 256908531.

It is a super-2 number, since 2×135809652² = 36888523152722208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 135809652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 402828 + ... + 403164.

It is an arithmetic number, because the mean of its divisors is an integer number (3747744).

Almost surely, 2^135809652 is an apocalyptic number.

135809652 is a gapful number since it is divisible by the number (12) 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 135809652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179891712).

135809652 is an abundant number, since it is smaller than the sum of its proper divisors (223973772).

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

135809652 is a wasteful number, since it uses less digits than its factorization.

135809652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 467 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 135809652 is about 11653.7398289133. The cubic root of 135809652 is about 514.0162853728.

It can be divided in two parts, 13580 and 9652, that added together give a palindrome (23232).

The spelling of 135809652 in words is "one hundred thirty-five million, eight hundred nine thousand, six hundred fifty-two".