135724672 has 16 divisors (see below), whose sum is σ = 270389250. Its totient is φ = 67862272.

The previous prime is 135724661. The next prime is 135724691. The reversal of 135724672 is 276427531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 88059456 + 47665216 = 9384^2 + 6904^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530047 + ... + 530302.

Almost surely, 2^135724672 is an apocalyptic number.

It is an amenable number.

135724672 is a deficient number, since it is larger than the sum of its proper divisors (134664578).

135724672 is an equidigital number, since it uses as much as digits as its factorization.

135724672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060363 (or 1060351 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The square root of 135724672 is about 11650.0932185112. The cubic root of 135724672 is about 513.9090514187.

The spelling of 135724672 in words is "one hundred thirty-five million, seven hundred twenty-four thousand, six hundred seventy-two".