1689728112 has 30 divisors (see below), whose sum is σ = 4728892272. Its totient is φ = 563242656.

The previous prime is 1689728111. The next prime is 1689728119. The reversal of 1689728112 is 2118279861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1689728111) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5866968 + ... + 5867255.

Almost surely, 2^1689728112 is an apocalyptic number.

1689728112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1689728112 is an abundant number, since it is smaller than the sum of its proper divisors (3039164160).

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

1689728112 is a wasteful number, since it uses less digits than its factorization.

1689728112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11734237 (or 11734228 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 1689728112 is about 41106.3025824508. The cubic root of 1689728112 is about 1191.0745447994.

The spelling of 1689728112 in words is "one billion, six hundred eighty-nine million, seven hundred twenty-eight thousand, one hundred twelve".