1216670244 has 96 divisors (see below), whose sum is σ = 3084412800. Its totient is φ = 372003840.

The previous prime is 1216670201. The next prime is 1216670249. The reversal of 1216670244 is 4420766121.

1216670244 = T₃₈₇ + T₃₈₈ + ... + T₁₉₄₄.

It is not an unprimeable number, because it can be changed into a prime (1216670249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1467222 + ... + 1468050.

It is an arithmetic number, because the mean of its divisors is an integer number (32129300).

Almost surely, 2^1216670244 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 1216670244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1542206400).

1216670244 is an abundant number, since it is smaller than the sum of its proper divisors (1867742556).

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

1216670244 is a wasteful number, since it uses less digits than its factorization.

1216670244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1216670244 is about 34880.8005068691. The cubic root of 1216670244 is about 1067.5567287540.

The spelling of 1216670244 in words is "one billion, two hundred sixteen million, six hundred seventy thousand, two hundred forty-four".