1267271272 has 32 divisors (see below), whose sum is σ = 2505420000. Its totient is φ = 599272128.

The previous prime is 1267271251. The next prime is 1267271309. The reversal of 1267271272 is 2721727621.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87354 + ... + 100822.

It is an arithmetic number, because the mean of its divisors is an integer number (78294375).

Almost surely, 2^1267271272 is an apocalyptic number.

It is an amenable number.

1267271272 is a deficient number, since it is larger than the sum of its proper divisors (1238148728).

1267271272 is a wasteful number, since it uses less digits than its factorization.

1267271272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14113 (or 14109 counting only the distinct ones).

The product of its digits is 32928, while the sum is 37.

The square root of 1267271272 is about 35598.7537984127. The cubic root of 1267271272 is about 1082.1559789848.

Adding to 1267271272 its reverse (2721727621), we get a palindrome (3988998893).

The spelling of 1267271272 in words is "one billion, two hundred sixty-seven million, two hundred seventy-one thousand, two hundred seventy-two".