135549432 has 96 divisors (see below), whose sum is σ = 395506800. Its totient is φ = 41782272.

The previous prime is 135549431. The next prime is 135549481. The reversal of 135549432 is 234945531.

135549432 is a `hidden beast` number, since 13 + 554 + 94 + 3 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135549431) 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 23 ways as a sum of consecutive naturals, for example, 71278 + ... + 73154.

Almost surely, 2^135549432 is an apocalyptic number.

135549432 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 135549432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197753400).

135549432 is an abundant number, since it is smaller than the sum of its proper divisors (259957368).

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

135549432 is a wasteful number, since it uses less digits than its factorization.

135549432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1965 (or 1958 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 135549432 is about 11642.5698194170. The cubic root of 135549432 is about 513.6877794184.

It can be divided in two parts, 135549 and 432, that added together give a triangular number (135981 = T₅₂₁).

The spelling of 135549432 in words is "one hundred thirty-five million, five hundred forty-nine thousand, four hundred thirty-two".