1799273728 has 144 divisors (see below), whose sum is σ = 4330009600. Its totient is φ = 745113600.

The previous prime is 1799273717. The next prime is 1799273747. The reversal of 1799273728 is 8273729971.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2721718 + ... + 2722378.

Almost surely, 2^1799273728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1799273728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2165004800).

1799273728 is an abundant number, since it is smaller than the sum of its proper divisors (2530735872).

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

1799273728 is an frugal number, since it uses more digits than its factorization.

1799273728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 701 counting only the distinct ones).

The product of its digits is 2667168, while the sum is 55.

The square root of 1799273728 is about 42417.8468100398. The cubic root of 1799273728 is about 1216.2767721795.

The spelling of 1799273728 in words is "one billion, seven hundred ninety-nine million, two hundred seventy-three thousand, seven hundred twenty-eight".