1915728 has 40 divisors (see below), whose sum is σ = 5008608. Its totient is φ = 630912.

The previous prime is 1915721. The next prime is 1915729. The reversal of 1915728 is 8275191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1915721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4950 + ... + 5322.

2^1915728 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 1915728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2504304).

1915728 is an abundant number, since it is smaller than the sum of its proper divisors (3092880).

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

1915728 is a wasteful number, since it uses less digits than its factorization.

1915728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491 (or 485 counting only the distinct ones).

The product of its digits is 5040, while the sum is 33.

The square root of 1915728 is about 1384.0982624077. The cubic root of 1915728 is about 124.1970505548.

The spelling of 1915728 in words is "one million, nine hundred fifteen thousand, seven hundred twenty-eight".