1812294 has 56 divisors (see below), whose sum is σ = 4485672. Its totient is φ = 544320.

The previous prime is 1812271. The next prime is 1812301. The reversal of 1812294 is 4922181.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

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

Its product of digits (1152) is a multiple of the sum of its prime factors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 15982 + ... + 16094.

2^1812294 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1812294, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2242836).

1812294 is an abundant number, since it is smaller than the sum of its proper divisors (2673378).

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

1812294 is a wasteful number, since it uses less digits than its factorization.

1812294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144 (or 129 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 1812294 is about 1346.2146931303. The cubic root of 1812294 is about 121.9203547172.

The spelling of 1812294 in words is "one million, eight hundred twelve thousand, two hundred ninety-four".