136403072 has 32 divisors (see below), whose sum is σ = 292647180. Its totient is φ = 62954496.

The previous prime is 136403051. The next prime is 136403081. The reversal of 136403072 is 270304631.

It can be written as a sum of positive squares in 2 ways, for example, as 118897216 + 17505856 = 10904^2 + 4184^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39323 + ... + 42650.

Almost surely, 2^136403072 is an apocalyptic number.

It is an amenable number.

136403072 is an abundant number, since it is smaller than the sum of its proper divisors (156244108).

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

136403072 is an equidigital number, since it uses as much as digits as its factorization.

136403072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82000 (or 81988 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 136403072 is about 11679.1725734317. The cubic root of 136403072 is about 514.7638619564.

The spelling of 136403072 in words is "one hundred thirty-six million, four hundred three thousand, seventy-two".