136628428 has 6 divisors (see below), whose sum is σ = 239099756. Its totient is φ = 68314212.

The previous prime is 136628423. The next prime is 136628447. The reversal of 136628428 is 824826631.

136628428 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

136628428 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (136628423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17078550 + ... + 17078557.

Almost surely, 2^136628428 is an apocalyptic number.

It is an amenable number.

136628428 is a deficient number, since it is larger than the sum of its proper divisors (102471328).

136628428 is a wasteful number, since it uses less digits than its factorization.

136628428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34157111 (or 34157109 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 136628428 is about 11688.8163643715. The cubic root of 136628428 is about 515.0471920810.

The spelling of 136628428 in words is "one hundred thirty-six million, six hundred twenty-eight thousand, four hundred twenty-eight".