135988472 has 32 divisors (see below), whose sum is σ = 274957200. Its totient is φ = 62841600.

The previous prime is 135988469. The next prime is 135988477. The reversal of 135988472 is 274889531.

It is a happy number.

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135988477) 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 7 ways as a sum of consecutive naturals, for example, 4679 + ... + 17142.

Almost surely, 2^135988472 is an apocalyptic number.

It is an amenable number.

135988472 is an abundant number, since it is smaller than the sum of its proper divisors (138968728).

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

135988472 is a wasteful number, since it uses less digits than its factorization.

135988472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21887 (or 21883 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 135988472 is about 11661.4095202938. The cubic root of 135988472 is about 514.2417874592.

The spelling of 135988472 in words is "one hundred thirty-five million, nine hundred eighty-eight thousand, four hundred seventy-two".