1290216 has 16 divisors (see below), whose sum is σ = 3225600. Its totient is φ = 430064.

The previous prime is 1290209. The next prime is 1290257. The reversal of 1290216 is 6120921.

It is a junction number, because it is equal to n+sod(n) for n = 1290192 and 1290201.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 26856 + ... + 26903.

It is an arithmetic number, because the mean of its divisors is an integer number (201600).

2^1290216 is an apocalyptic number.

It is an amenable number.

1290216 is an abundant number, since it is smaller than the sum of its proper divisors (1935384).

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

1290216 is a wasteful number, since it uses less digits than its factorization.

1290216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53768 (or 53764 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 1290216 is about 1135.8767538778. The cubic root of 1290216 is about 108.8647988419.

The spelling of 1290216 in words is "one million, two hundred ninety thousand, two hundred sixteen".