1728077216 has 24 divisors (see below), whose sum is σ = 3550073184. Its totient is φ = 826471360.

The previous prime is 1728077209. The next prime is 1728077257. The reversal of 1728077216 is 6127708271.

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, 1173230 + ... + 1174701.

It is an arithmetic number, because the mean of its divisors is an integer number (147919716).

Almost surely, 2^1728077216 is an apocalyptic number.

1728077216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1728077216 is an abundant number, since it is smaller than the sum of its proper divisors (1821995968).

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

1728077216 is a wasteful number, since it uses less digits than its factorization.

1728077216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2347964 (or 2347956 counting only the distinct ones).

The product of its (nonzero) digits is 65856, while the sum is 41.

The square root of 1728077216 is about 41570.1481354108. The cubic root of 1728077216 is about 1200.0178738078.

The spelling of 1728077216 in words is "one billion, seven hundred twenty-eight million, seventy-seven thousand, two hundred sixteen".