1273198288 has 20 divisors (see below), whose sum is σ = 2508634080. Its totient is φ = 625808864.

The previous prime is 1273198279. The next prime is 1273198291. The reversal of 1273198288 is 8828913721.

It is a super-2 number, since 2×1273198288² = 3242067761132261888, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 673420 + ... + 675307.

It is an arithmetic number, because the mean of its divisors is an integer number (125431704).

Almost surely, 2^1273198288 is an apocalyptic number.

It is an amenable number.

1273198288 is a deficient number, since it is larger than the sum of its proper divisors (1235435792).

1273198288 is a wasteful number, since it uses less digits than its factorization.

1273198288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1348794 (or 1348788 counting only the distinct ones).

The product of its digits is 387072, while the sum is 49.

The square root of 1273198288 is about 35681.9042092767. The cubic root of 1273198288 is about 1083.8404334782.

The spelling of 1273198288 in words is "one billion, two hundred seventy-three million, one hundred ninety-eight thousand, two hundred eighty-eight".