135152238 has 64 divisors (see below), whose sum is σ = 303912000. Its totient is φ = 39782400.

The previous prime is 135152207. The next prime is 135152239. The reversal of 135152238 is 832251531.

It is a super-2 number, since 2×135152238² = 36532254872817288, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135152239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 336838 + ... + 337238.

It is an arithmetic number, because the mean of its divisors is an integer number (4748625).

Almost surely, 2^135152238 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135152238, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151956000).

135152238 is an abundant number, since it is smaller than the sum of its proper divisors (168759762).

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

135152238 is a wasteful number, since it uses less digits than its factorization.

135152238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597.

The product of its digits is 7200, while the sum is 30.

The square root of 135152238 is about 11625.4994731409. The cubic root of 135152238 is about 513.1855436511.

It can be divided in two parts, 13515 and 2238, that added together give a triangular number (15753 = T₁₇₇).

The spelling of 135152238 in words is "one hundred thirty-five million, one hundred fifty-two thousand, two hundred thirty-eight".