135152440 has 32 divisors (see below), whose sum is σ = 311168880. Its totient is φ = 52803072.

The previous prime is 135152429. The next prime is 135152471. The reversal of 135152440 is 44251531.

It is a happy number.

135152440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37569 + ... + 41008.

Almost surely, 2^135152440 is an apocalyptic number.

135152440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135152440 is an abundant number, since it is smaller than the sum of its proper divisors (176016440).

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

135152440 is a wasteful number, since it uses less digits than its factorization.

135152440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78631 (or 78627 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 135152440 is about 11625.5081609365. The cubic root of 135152440 is about 513.1857993218.

Subtracting from 135152440 its reverse (44251531), we obtain a palindrome (90900909).

The spelling of 135152440 in words is "one hundred thirty-five million, one hundred fifty-two thousand, four hundred forty".