136478 has 4 divisors (see below), whose sum is σ = 204720. Its totient is φ = 68238.

The previous prime is 136471. The next prime is 136481. The reversal of 136478 is 874631.

136478 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 874631 = 227 ⋅3853.

It is a self number, because there is not a number n which added to its sum of digits gives 136478.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 136478.

It is not an unprimeable number, because it can be changed into a prime (136471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34118 + ... + 34121.

It is an arithmetic number, because the mean of its divisors is an integer number (51180).

2¹³⁶⁴⁷⁸ is an apocalyptic number.

136478 is a deficient number, since it is larger than the sum of its proper divisors (68242).

136478 is an equidigital number, since it uses as much as digits as its factorization.

136478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68241.

The product of its digits is 4032, while the sum is 29.

The square root of 136478 is about 369.4292895806. The cubic root of 136478 is about 51.4858100221.

The spelling of 136478 in words is "one hundred thirty-six thousand, four hundred seventy-eight".