1855424 has 28 divisors (see below), whose sum is σ = 3758184. Its totient is φ = 908544.

The previous prime is 1855423. The next prime is 1855457. The reversal of 1855424 is 4245581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1855421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3119 + ... + 3665.

2^1855424 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 1855424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1879092).

1855424 is an abundant number, since it is smaller than the sum of its proper divisors (1902760).

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

1855424 is an equidigital number, since it uses as much as digits as its factorization.

1855424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 602 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The square root of 1855424 is about 1362.1394935909. The cubic root of 1855424 is about 122.8799586769.

The spelling of 1855424 in words is "one million, eight hundred fifty-five thousand, four hundred twenty-four".