1273239258228 has 120 divisors (see below), whose sum is σ = 3906809806592. Its totient is φ = 353950658496.

The previous prime is 1273239258227. The next prime is 1273239258251. The reversal of 1273239258228 is 8228529323721.

1273239258228 is a `hidden beast` number, since 1 + 2 + 7 + 3 + 2 + 39 + 2 + 582 + 28 = 666.

It is a super-2 number, since 2×1273239258228² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273239258227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7502476 + ... + 7670307.

Almost surely, 2^{1273239258228} is an apocalyptic number.

1273239258228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1273239258228 is an abundant number, since it is smaller than the sum of its proper divisors (2633570548364).

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

1273239258228 is a wasteful number, since it uses less digits than its factorization.

1273239258228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15172843 (or 15172832 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The spelling of 1273239258228 in words is "one trillion, two hundred seventy-three billion, two hundred thirty-nine million, two hundred fifty-eight thousand, two hundred twenty-eight".