1216288 has 24 divisors (see below), whose sum is σ = 2419200. Its totient is φ = 601920.

The previous prime is 1216277. The next prime is 1216337. The reversal of 1216288 is 8826121.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6013 + ... + 6211.

It is an arithmetic number, because the mean of its divisors is an integer number (100800).

2^1216288 is an apocalyptic number.

It is an amenable number.

1216288 is a deficient number, since it is larger than the sum of its proper divisors (1202912).

1216288 is a wasteful number, since it uses less digits than its factorization.

1216288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400 (or 392 counting only the distinct ones).

The product of its digits is 1536, while the sum is 28.

The square root of 1216288 is about 1102.8544781611. The cubic root of 1216288 is about 106.7444918152.

The spelling of 1216288 in words is "one million, two hundred sixteen thousand, two hundred eighty-eight".