1985004 has 36 divisors (see below), whose sum is σ = 5735184. Its totient is φ = 567072.

The previous prime is 1985003. The next prime is 1985017. The reversal of 1985004 is 4005891.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985003) 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, 3687 + ... + 4190.

2^1985004 is an apocalyptic number.

1985004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1985004 is an abundant number, since it is smaller than the sum of its proper divisors (3750180).

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

1985004 is a wasteful number, since it uses less digits than its factorization.

1985004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7894 (or 7889 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1985004 is about 1408.9016999067. The cubic root of 1985004 is about 125.6764183961.

The spelling of 1985004 in words is "one million, nine hundred eighty-five thousand, four".