101728436 has 12 divisors (see below), whose sum is σ = 178929828. Its totient is φ = 50605632.

The previous prime is 101728427. The next prime is 101728477. The reversal of 101728436 is 634827101.

It can be written as a sum of positive squares in 2 ways, for example, as 72352036 + 29376400 = 8506^2 + 5420^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63761 + ... + 65336.

It is an arithmetic number, because the mean of its divisors is an integer number (14910819).

Almost surely, 2^101728436 is an apocalyptic number.

It is an amenable number.

101728436 is a deficient number, since it is larger than the sum of its proper divisors (77201392).

101728436 is a wasteful number, since it uses less digits than its factorization.

101728436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129298 (or 129296 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 101728436 is about 10086.0515564814. The cubic root of 101728436 is about 466.8178519225.

The spelling of 101728436 in words is "one hundred one million, seven hundred twenty-eight thousand, four hundred thirty-six".