1216672460 has 12 divisors (see below), whose sum is σ = 2555012208. Its totient is φ = 486668976.

The previous prime is 1216672451. The next prime is 1216672489. The reversal of 1216672460 is 642766121.

It is a self number, because there is not a number n which added to its sum of digits gives 1216672460.

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, 30416792 + ... + 30416831.

It is an arithmetic number, because the mean of its divisors is an integer number (212917684).

Almost surely, 2^1216672460 is an apocalyptic number.

1216672460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1216672460 is an abundant number, since it is smaller than the sum of its proper divisors (1338339748).

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

1216672460 is a wasteful number, since it uses less digits than its factorization.

1216672460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60833632 (or 60833630 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 1216672460 is about 34880.8322721807. The cubic root of 1216672460 is about 1067.5573768903.

The spelling of 1216672460 in words is "one billion, two hundred sixteen million, six hundred seventy-two thousand, four hundred sixty".