103731728 has 10 divisors (see below), whose sum is σ = 200980254. Its totient is φ = 51865856.

The previous prime is 103731721. The next prime is 103731751. The reversal of 103731728 is 827137301.

It can be written as a sum of positive squares in only one way, i.e., 103469584 + 262144 = 10172^2 + 512^2 .

It is a junction number, because it is equal to n+sod(n) for n = 103731694 and 103731703.

It is not an unprimeable number, because it can be changed into a prime (103731721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3241601 + ... + 3241632.

Almost surely, 2^103731728 is an apocalyptic number.

It is an amenable number.

103731728 is a deficient number, since it is larger than the sum of its proper divisors (97248526).

103731728 is an equidigital number, since it uses as much as digits as its factorization.

103731728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6483241 (or 6483235 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 103731728 is about 10184.8774170336. The cubic root of 103731728 is about 469.8622321425.

The spelling of 103731728 in words is "one hundred three million, seven hundred thirty-one thousand, seven hundred twenty-eight".