1823904 has 48 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 607680.

The previous prime is 1823903. The next prime is 1823911. The reversal of 1823904 is 4093281.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1823903) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192 + ... + 1919.

It is an arithmetic number, because the mean of its divisors is an integer number (110880).

2^1823904 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 1823904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2661120).

1823904 is an abundant number, since it is smaller than the sum of its proper divisors (3498336).

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

1823904 is a wasteful number, since it uses less digits than its factorization.

1823904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2130 (or 2116 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1823904 is about 1350.5198998904. The cubic root of 1823904 is about 122.1801512992.

The spelling of 1823904 in words is "one million, eight hundred twenty-three thousand, nine hundred four".