1889728 has 14 divisors (see below), whose sum is σ = 3750056. Its totient is φ = 944832.

The previous prime is 1889717. The next prime is 1889743. The reversal of 1889728 is 8279881.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14700 + ... + 14827.

2^1889728 is an apocalyptic number.

It is an amenable number.

1889728 is a deficient number, since it is larger than the sum of its proper divisors (1860328).

1889728 is an equidigital number, since it uses as much as digits as its factorization.

1889728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29539 (or 29529 counting only the distinct ones).

The product of its digits is 64512, while the sum is 43.

The square root of 1889728 is about 1374.6737794837. The cubic root of 1889728 is about 123.6326275478.

The spelling of 1889728 in words is "one million, eight hundred eighty-nine thousand, seven hundred twenty-eight".