135647388 has 18 divisors (see below), whose sum is σ = 342886544. Its totient is φ = 45215784.

The previous prime is 135647387. The next prime is 135647389. The reversal of 135647388 is 883746531.

135647388 is a `hidden beast` number, since 1 + 3 + 564 + 7 + 3 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (135647387) and next prime (135647389).

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135647381) 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 5 ways as a sum of consecutive naturals, for example, 1883956 + ... + 1884027.

Almost surely, 2^135647388 is an apocalyptic number.

135647388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

135647388 is an abundant number, since it is smaller than the sum of its proper divisors (207239156).

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

135647388 is a wasteful number, since it uses less digits than its factorization.

135647388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3767993 (or 3767988 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 135647388 is about 11646.7758628730. The cubic root of 135647388 is about 513.8114899672.

The spelling of 135647388 in words is "one hundred thirty-five million, six hundred forty-seven thousand, three hundred eighty-eight".