1904020 has 48 divisors (see below), whose sum is σ = 4290048. Its totient is φ = 708480.

The previous prime is 1904011. The next prime is 1904027. The reversal of 1904020 is 204091.

It is a junction number, because it is equal to n+sod(n) for n = 1903985 and 1904003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1904027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22899 + ... + 22981.

It is an arithmetic number, because the mean of its divisors is an integer number (89376).

2^1904020 is an apocalyptic number.

1904020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1904020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2145024).

1904020 is an abundant number, since it is smaller than the sum of its proper divisors (2386028).

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

1904020 is a wasteful number, since it uses less digits than its factorization.

1904020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1904020 is about 1379.8623119717. The cubic root of 1904020 is about 123.9435226677.

The spelling of 1904020 in words is "one million, nine hundred four thousand, twenty".