1894224 has 80 divisors (see below), whose sum is σ = 5396480. Its totient is φ = 570240.

The previous prime is 1894213. The next prime is 1894229. The reversal of 1894224 is 4224981.

1894224 = T₄₃₇ + T₄₃₈ + ... + T₄₅₅.

Its product of digits (4608) is a multiple of the sum of its prime factors (128).

It is a junction number, because it is equal to n+sod(n) for n = 1894191 and 1894200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28239 + ... + 28305.

It is an arithmetic number, because the mean of its divisors is an integer number (67456).

2^1894224 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 1894224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2698240).

1894224 is an abundant number, since it is smaller than the sum of its proper divisors (3502256).

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

1894224 is a wasteful number, since it uses less digits than its factorization.

1894224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128 (or 122 counting only the distinct ones).

The product of its digits is 4608, while the sum is 30.

The square root of 1894224 is about 1376.3081050404. The cubic root of 1894224 is about 123.7305979173.

The spelling of 1894224 in words is "one million, eight hundred ninety-four thousand, two hundred twenty-four".