1908216 has 48 divisors (see below), whose sum is σ = 5475600. Its totient is φ = 598272.

The previous prime is 1908209. The next prime is 1908217. The reversal of 1908216 is 6128091.

It is a self number, because there is not a number n which added to its sum of digits gives 1908216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1908217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445 + ... + 2003.

It is an arithmetic number, because the mean of its divisors is an integer number (114075).

2^1908216 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 1908216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2737800).

1908216 is an abundant number, since it is smaller than the sum of its proper divisors (3567384).

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

1908216 is a wasteful number, since it uses less digits than its factorization.

1908216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588 (or 1581 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1908216 is about 1381.3819167775. The cubic root of 1908216 is about 124.0345030590.

The spelling of 1908216 in words is "one million, nine hundred eight thousand, two hundred sixteen".