1728012732 has 48 divisors (see below), whose sum is σ = 4138278144. Its totient is φ = 560880000.

The previous prime is 1728012731. The next prime is 1728012799. The reversal of 1728012732 is 2372108271.

It is a junction number, because it is equal to n+sod(n) for n = 1728012693 and 1728012702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728012731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 277857 + ... + 284007.

It is an arithmetic number, because the mean of its divisors is an integer number (86214128).

Almost surely, 2^1728012732 is an apocalyptic number.

1728012732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1728012732 is an abundant number, since it is smaller than the sum of its proper divisors (2410265412).

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

1728012732 is a wasteful number, since it uses less digits than its factorization.

1728012732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6770 (or 6768 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 1728012732 is about 41569.3725235299. The cubic root of 1728012732 is about 1200.0029472150.

The spelling of 1728012732 in words is "one billion, seven hundred twenty-eight million, twelve thousand, seven hundred thirty-two".