1904544 has 72 divisors (see below), whose sum is σ = 5749380. Its totient is φ = 595968.

The previous prime is 1904543. The next prime is 1904549. The reversal of 1904544 is 4454091.

It can be written as a sum of positive squares in 2 ways, for example, as 1904400 + 144 = 1380^2 + 12^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (1904543) 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, 4702 + ... + 5090.

2^1904544 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 1904544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2874690).

1904544 is an abundant number, since it is smaller than the sum of its proper divisors (3844836).

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

1904544 is a wasteful number, since it uses less digits than its factorization.

1904544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1904544 is about 1380.0521729268. The cubic root of 1904544 is about 123.9548916745.

The spelling of 1904544 in words is "one million, nine hundred four thousand, five hundred forty-four".