1804357728 has 384 divisors, whose sum is σ = 5922201600. Its totient is φ = 532224000.

The previous prime is 1804357727. The next prime is 1804357813. The reversal of 1804357728 is 8277534081.

1804357728 is a `hidden beast` number, since 18 + 0 + 43 + 577 + 28 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1804357727) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17864878 + ... + 17864978.

It is an arithmetic number, because the mean of its divisors is an integer number (15422400).

Almost surely, 2^1804357728 is an apocalyptic number.

1804357728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1804357728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2961100800).

1804357728 is an abundant number, since it is smaller than the sum of its proper divisors (4117843872).

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

1804357728 is a wasteful number, since it uses less digits than its factorization.

1804357728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 45.

The square root of 1804357728 is about 42477.7321428534. The cubic root of 1804357728 is about 1217.4212591819.

The spelling of 1804357728 in words is "one billion, eight hundred four million, three hundred fifty-seven thousand, seven hundred twenty-eight".