1728161456 has 40 divisors (see below), whose sum is σ = 3830421504. Its totient is φ = 739909440.

The previous prime is 1728161453. The next prime is 1728161483. The reversal of 1728161456 is 6541618271.

It is not an unprimeable number, because it can be changed into a prime (1728161453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115121 + ... + 129263.

Almost surely, 2^1728161456 is an apocalyptic number.

1728161456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1728161456 is an abundant number, since it is smaller than the sum of its proper divisors (2102260048).

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

1728161456 is a wasteful number, since it uses less digits than its factorization.

1728161456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15249 (or 15243 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 1728161456 is about 41571.1613501475. The cubic root of 1728161456 is about 1200.0373729101.

The spelling of 1728161456 in words is "one billion, seven hundred twenty-eight million, one hundred sixty-one thousand, four hundred fifty-six".