1216076500 has 48 divisors (see below), whose sum is σ = 2659325760. Its totient is φ = 485805600.

The previous prime is 1216076497. The next prime is 1216076503. The reversal of 1216076500 is 56706121.

It is an interprime number because it is at equal distance from previous prime (1216076497) and next prime (1216076503).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216076503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 728667 + ... + 730333.

It is an arithmetic number, because the mean of its divisors is an integer number (55402620).

Almost surely, 2^1216076500 is an apocalyptic number.

1216076500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1216076500 is an abundant number, since it is smaller than the sum of its proper divisors (1443249260).

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

1216076500 is a wasteful number, since it uses less digits than its factorization.

1216076500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145 (or 3133 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 1216076500 is about 34872.2884250518. The cubic root of 1216076500 is about 1067.3830419938.

The spelling of 1216076500 in words is "one billion, two hundred sixteen million, seventy-six thousand, five hundred".