136728093 has 8 divisors (see below), whose sum is σ = 193027968. Its totient is φ = 85790144.

The previous prime is 136728091. The next prime is 136728107. The reversal of 136728093 is 390827631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136728093 - 2¹ = 136728091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136728091) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1340421 + ... + 1340522.

It is an arithmetic number, because the mean of its divisors is an integer number (24128496).

Almost surely, 2^136728093 is an apocalyptic number.

It is an amenable number.

136728093 is a deficient number, since it is larger than the sum of its proper divisors (56299875).

136728093 is a wasteful number, since it uses less digits than its factorization.

136728093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680963.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 136728093 is about 11693.0788503285. The cubic root of 136728093 is about 515.1723971173.

The spelling of 136728093 in words is "one hundred thirty-six million, seven hundred twenty-eight thousand, ninety-three".