1272727200 has 72 divisors (see below), whose sum is σ = 4142734848. Its totient is φ = 339393280.

The previous prime is 1272727199. The next prime is 1272727271. The reversal of 1272727200 is 27272721.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 262752 + ... + 267551.

It is an arithmetic number, because the mean of its divisors is an integer number (57537984).

Almost surely, 2^1272727200 is an apocalyptic number.

1272727200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272727200 is an abundant number, since it is smaller than the sum of its proper divisors (2870007648).

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

1272727200 is a wasteful number, since it uses less digits than its factorization.

1272727200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530326 (or 530313 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 1272727200 is about 35675.3023813394. The cubic root of 1272727200 is about 1083.7067420198.

Adding to 1272727200 its reverse (27272721), we get a palindrome (1299999921).

The spelling of 1272727200 in words is "one billion, two hundred seventy-two million, seven hundred twenty-seven thousand, two hundred".