1820496 has 80 divisors (see below), whose sum is σ = 5249664. Its totient is φ = 540672.

The previous prime is 1820471. The next prime is 1820501. The reversal of 1820496 is 6940281.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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, 18720 + ... + 18816.

2^1820496 is an apocalyptic number.

1820496 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1820496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2624832).

1820496 is an abundant number, since it is smaller than the sum of its proper divisors (3429168).

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

1820496 is a wasteful number, since it uses less digits than its factorization.

1820496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1820496 is about 1349.2575736308. The cubic root of 1820496 is about 122.1040051918.

The spelling of 1820496 in words is "one million, eight hundred twenty thousand, four hundred ninety-six".