1216908 has 72 divisors (see below), whose sum is σ = 3843840. Its totient is φ = 315360.

The previous prime is 1216903. The next prime is 1216913. The reversal of 1216908 is 8096121.

It is an interprime number because it is at equal distance from previous prime (1216903) and next prime (1216913).

It is not an unprimeable number, because it can be changed into a prime (1216903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2553 + ... + 2991.

2^1216908 is an apocalyptic number.

1216908 is a gapful number since it is divisible by the number (18) 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 1216908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1921920).

1216908 is an abundant number, since it is smaller than the sum of its proper divisors (2626932).

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

1216908 is a wasteful number, since it uses less digits than its factorization.

1216908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 462 counting only the distinct ones).

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

The square root of 1216908 is about 1103.1355311112. The cubic root of 1216908 is about 106.7626263203.

The spelling of 1216908 in words is "one million, two hundred sixteen thousand, nine hundred eight".