1810396 has 48 divisors (see below), whose sum is σ = 3951360. Its totient is φ = 708480.

The previous prime is 1810363. The next prime is 1810397. The reversal of 1810396 is 6930181.

1810396 = T₂₂₃ + T₂₂₄ + ... + T₂₇₉.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1810397) 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, 21771 + ... + 21853.

It is an arithmetic number, because the mean of its divisors is an integer number (82320).

2^1810396 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 1810396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1975680).

1810396 is an abundant number, since it is smaller than the sum of its proper divisors (2140964).

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

1810396 is a wasteful number, since it uses less digits than its factorization.

1810396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154 (or 152 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1810396 is about 1345.5095688995. The cubic root of 1810396 is about 121.8777778021.

The spelling of 1810396 in words is "one million, eight hundred ten thousand, three hundred ninety-six".