1272072444 has 12 divisors (see below), whose sum is σ = 2968169064. Its totient is φ = 424024144.

The previous prime is 1272072433. The next prime is 1272072491. The reversal of 1272072444 is 4442702721.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53003007 + ... + 53003030.

It is an arithmetic number, because the mean of its divisors is an integer number (247347422).

Almost surely, 2^1272072444 is an apocalyptic number.

It is an amenable number.

1272072444 is an abundant number, since it is smaller than the sum of its proper divisors (1696096620).

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

1272072444 is a wasteful number, since it uses less digits than its factorization.

1272072444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106006044 (or 106006042 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 33.

The square root of 1272072444 is about 35666.1246002422. The cubic root of 1272072444 is about 1083.5208720745.

The spelling of 1272072444 in words is "one billion, two hundred seventy-two million, seventy-two thousand, four hundred forty-four".