101728061 has 4 divisors (see below), whose sum is σ = 101752224. Its totient is φ = 101703900.

The previous prime is 101728049. The next prime is 101728079. The reversal of 101728061 is 160827101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160827101 = 31 ⋅5187971.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101728061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101728061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101728001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3935 + ... + 14796.

It is an arithmetic number, because the mean of its divisors is an integer number (25438056).

Almost surely, 2^101728061 is an apocalyptic number.

It is an amenable number.

101728061 is a deficient number, since it is larger than the sum of its proper divisors (24163).

101728061 is an equidigital number, since it uses as much as digits as its factorization.

101728061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24162.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 101728061 is about 10086.0329664343. The cubic root of 101728061 is about 466.8172783139.

The spelling of 101728061 in words is "one hundred one million, seven hundred twenty-eight thousand, sixty-one".