1827216 has 30 divisors (see below), whose sum is σ = 5114070. Its totient is φ = 609024.

The previous prime is 1827209. The next prime is 1827227. The reversal of 1827216 is 6127281.

It can be written as a sum of positive squares in only one way, i.e., 1218816 + 608400 = 1104^2 + 780^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1827216.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6201 + ... + 6488.

It is an arithmetic number, because the mean of its divisors is an integer number (170469).

2^1827216 is an apocalyptic number.

1827216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1827216 is an abundant number, since it is smaller than the sum of its proper divisors (3286854).

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

1827216 is a wasteful number, since it uses less digits than its factorization.

1827216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12703 (or 12694 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 1827216 is about 1351.7455381839. The cubic root of 1827216 is about 122.2540616162.

The spelling of 1827216 in words is "one million, eight hundred twenty-seven thousand, two hundred sixteen".