1272051028 has 24 divisors (see below), whose sum is σ = 2269435392. Its totient is φ = 623753664.

The previous prime is 1272051019. The next prime is 1272051031. The reversal of 1272051028 is 8201502721.

It is a super-2 number, since 2×1272051028² = 3236227635671713568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1272050987 and 1272051005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31501 + ... + 59467.

It is an arithmetic number, because the mean of its divisors is an integer number (94559808).

Almost surely, 2^1272051028 is an apocalyptic number.

It is an amenable number.

1272051028 is a deficient number, since it is larger than the sum of its proper divisors (997384364).

1272051028 is a wasteful number, since it uses less digits than its factorization.

1272051028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28191 (or 28189 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 1272051028 is about 35665.8243701166. The cubic root of 1272051028 is about 1083.5147914950.

Adding to 1272051028 its reverse (8201502721), we get a palindrome (9473553749).

The spelling of 1272051028 in words is "one billion, two hundred seventy-two million, fifty-one thousand, twenty-eight".