103785728 has 18 divisors (see below), whose sum is σ = 207166554. Its totient is φ = 51892736.

The previous prime is 103785701. The next prime is 103785749. The reversal of 103785728 is 827587301.

It can be written as a sum of positive squares in only one way, i.e., 63234304 + 40551424 = 7952^2 + 6368^2 .

It is a congruent number.

It is an unprimeable number.

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, 202451 + ... + 202962.

It is an arithmetic number, because the mean of its divisors is an integer number (11509253).

Almost surely, 2^103785728 is an apocalyptic number.

It is an amenable number.

103785728 is a deficient number, since it is larger than the sum of its proper divisors (103380826).

103785728 is an frugal number, since it uses more digits than its factorization.

103785728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405429 (or 405415 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 41.

The square root of 103785728 is about 10187.5280613110. The cubic root of 103785728 is about 469.9437506246.

The spelling of 103785728 in words is "one hundred three million, seven hundred eighty-five thousand, seven hundred twenty-eight".