103831728 has 160 divisors (see below), whose sum is σ = 360310272. Its totient is φ = 24883200.

The previous prime is 103831723. The next prime is 103831759. The reversal of 103831728 is 827138301.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (103831723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46968 + ... + 49128.

Almost surely, 2^103831728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103831728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180155136).

103831728 is an abundant number, since it is smaller than the sum of its proper divisors (256478544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103831728 is a wasteful number, since it uses less digits than its factorization.

103831728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2203 (or 2197 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 103831728 is about 10189.7854736986. The cubic root of 103831728 is about 470.0131699946.

The spelling of 103831728 in words is "one hundred three million, eight hundred thirty-one thousand, seven hundred twenty-eight".