136628 has 6 divisors (see below), whose sum is σ = 239106. Its totient is φ = 68312.

The previous prime is 136621. The next prime is 136649. The reversal of 136628 is 826631.

It can be written as a sum of positive squares in only one way, i.e., 128164 + 8464 = 358^2 + 92^2 .

It is a junction number, because it is equal to n+sod(n) for n = 136597 and 136606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136621) by changing a digit.

136628 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17075 + ... + 17082.

It is an arithmetic number, because the mean of its divisors is an integer number (39851).

2¹³⁶⁶²⁸ is an apocalyptic number.

It is an amenable number.

136628 is a deficient number, since it is larger than the sum of its proper divisors (102478).

136628 is a wasteful number, since it uses less digits than its factorization.

136628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34161 (or 34159 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

The square root of 136628 is about 369.6322496753. The cubic root of 136628 is about 51.5046654271.

The spelling of 136628 in words is "one hundred thirty-six thousand, six hundred twenty-eight".