101728497 has 16 divisors (see below), whose sum is σ = 149471168. Its totient is φ = 61145280.

The previous prime is 101728481. The next prime is 101728507. The reversal of 101728497 is 794827101.

It is not a de Polignac number, because 101728497 - 2⁴ = 101728481 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101728427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28654 + ... + 32007.

It is an arithmetic number, because the mean of its divisors is an integer number (9341948).

Almost surely, 2^101728497 is an apocalyptic number.

It is an amenable number.

101728497 is a deficient number, since it is larger than the sum of its proper divisors (47742671).

101728497 is a wasteful number, since it uses less digits than its factorization.

101728497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60720.

The product of its (nonzero) digits is 28224, while the sum is 39.

The square root of 101728497 is about 10086.0545804591. The cubic root of 101728497 is about 466.8179452294.

The spelling of 101728497 in words is "one hundred one million, seven hundred twenty-eight thousand, four hundred ninety-seven".