1985928 has 32 divisors (see below), whose sum is σ = 5674560. Its totient is φ = 567360.

The previous prime is 1985903. The next prime is 1985939. The reversal of 1985928 is 8295891.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a d-powerful number, because it can be written as 1 + 9 + 8 + 5⁹ + 9 + 2¹⁵ + 8 .

It is a self number, because there is not a number n which added to its sum of digits gives 1985928.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5743 + ... + 6078.

It is an arithmetic number, because the mean of its divisors is an integer number (177330).

2^1985928 is an apocalyptic number.

It is an amenable number.

1985928 is an abundant number, since it is smaller than the sum of its proper divisors (3688632).

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

1985928 is a wasteful number, since it uses less digits than its factorization.

1985928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11837 (or 11833 counting only the distinct ones).

The product of its digits is 51840, while the sum is 42.

The square root of 1985928 is about 1409.2295767546. The cubic root of 1985928 is about 125.6959157534.

The spelling of 1985928 in words is "one million, nine hundred eighty-five thousand, nine hundred twenty-eight".