1789273728 has 96 divisors (see below), whose sum is σ = 5616936000. Its totient is φ = 542200320.

The previous prime is 1789273721. The next prime is 1789273729. The reversal of 1789273728 is 8273729871.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×1789273728² = 6403000947422035968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1789273721) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57928 + ... + 83271.

It is an arithmetic number, because the mean of its divisors is an integer number (58509750).

Almost surely, 2^1789273728 is an apocalyptic number.

1789273728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1789273728 is an abundant number, since it is smaller than the sum of its proper divisors (3827662272).

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

1789273728 is a wasteful number, since it uses less digits than its factorization.

1789273728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141230 (or 141215 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 1789273728 is about 42299.8076591372. The cubic root of 1789273728 is about 1214.0193112755.

The spelling of 1789273728 in words is "one billion, seven hundred eighty-nine million, two hundred seventy-three thousand, seven hundred twenty-eight".