1282643272 has 8 divisors (see below), whose sum is σ = 2404956150. Its totient is φ = 641321632.

The previous prime is 1282643269. The next prime is 1282643273. The reversal of 1282643272 is 2723462821.

It can be written as a sum of positive squares in only one way, i.e., 1282642596 + 676 = 35814^2 + 26^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1282643273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80165197 + ... + 80165212.

Almost surely, 2^1282643272 is an apocalyptic number.

It is an amenable number.

1282643272 is a deficient number, since it is larger than the sum of its proper divisors (1122312878).

1282643272 is a wasteful number, since it uses less digits than its factorization.

1282643272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160330415 (or 160330411 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 1282643272 is about 35814.0094376488. The cubic root of 1282643272 is about 1086.5139227685.

The spelling of 1282643272 in words is "one billion, two hundred eighty-two million, six hundred forty-three thousand, two hundred seventy-two".