101728823 has 8 divisors (see below), whose sum is σ = 116329248. Its totient is φ = 87145344.

The previous prime is 101728819. The next prime is 101728829. The reversal of 101728823 is 328827101.

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 101728823 - 2² = 101728819 is a prime.

It is a super-3 number, since 3×101728823³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 101728823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101728829) 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, 13715 + ... + 19787.

It is an arithmetic number, because the mean of its divisors is an integer number (14541156).

Almost surely, 2^101728823 is an apocalyptic number.

101728823 is a deficient number, since it is larger than the sum of its proper divisors (14600425).

101728823 is an equidigital number, since it uses as much as digits as its factorization.

101728823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8473.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 101728823 is about 10086.0707413740. The cubic root of 101728823 is about 466.8184438851.

The spelling of 101728823 in words is "one hundred one million, seven hundred twenty-eight thousand, eight hundred twenty-three".