136865628 has 36 divisors (see below), whose sum is σ = 346731840. Its totient is φ = 45520896.

The previous prime is 136865621. The next prime is 136865629. The reversal of 136865628 is 826568631.

136865628 is a `hidden beast` number, since 1 + 3 + 6 + 86 + 562 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136865621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13276 + ... + 21212.

It is an arithmetic number, because the mean of its divisors is an integer number (9631440).

Almost surely, 2^136865628 is an apocalyptic number.

136865628 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

136865628 is an abundant number, since it is smaller than the sum of its proper divisors (209866212).

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

136865628 is a wasteful number, since it uses less digits than its factorization.

136865628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8426 (or 8421 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 136865628 is about 11698.9584151753. The cubic root of 136865628 is about 515.3450768007.

The spelling of 136865628 in words is "one hundred thirty-six million, eight hundred sixty-five thousand, six hundred twenty-eight".