1273216000 has 352 divisors, whose sum is σ = 3831984000. Its totient is φ = 421478400.

The previous prime is 1273215961. The next prime is 1273216013. The reversal of 1273216000 is 6123721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 43903986 + ... + 43904014.

Almost surely, 2^1273216000 is an apocalyptic number.

1273216000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1273216000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1915992000).

1273216000 is an abundant number, since it is smaller than the sum of its proper divisors (2558768000).

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

1273216000 is an frugal number, since it uses more digits than its factorization.

1273216000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85 (or 43 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 1273216000 is about 35682.1524014457. The cubic root of 1273216000 is about 1083.8454593758.

Adding to 1273216000 its reverse (6123721), we get a palindrome (1279339721).

The spelling of 1273216000 in words is "one billion, two hundred seventy-three million, two hundred sixteen thousand".