1731728256 has 64 divisors (see below), whose sum is σ = 4870504080. Its totient is φ = 543285248.

The previous prime is 1731728233. The next prime is 1731728263. The reversal of 1731728256 is 6528271371.

It is a tau number, because it is divible by the number of its divisors (64).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126111 + ... + 139166.

Almost surely, 2^1731728256 is an apocalyptic number.

1731728256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1731728256 is an abundant number, since it is smaller than the sum of its proper divisors (3138775824).

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

1731728256 is a wasteful number, since it uses less digits than its factorization.

1731728256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265311 (or 265299 counting only the distinct ones).

The product of its digits is 141120, while the sum is 42.

The square root of 1731728256 is about 41614.0391694918. The cubic root of 1731728256 is about 1200.8624022923.

The spelling of 1731728256 in words is "one billion, seven hundred thirty-one million, seven hundred twenty-eight thousand, two hundred fifty-six".