1273678992 has 50 divisors (see below), whose sum is σ = 3686400278. Its totient is φ = 424559232.

The previous prime is 1273678957. The next prime is 1273679023. The reversal of 1273678992 is 2998763721.

It can be written as a sum of positive squares in only one way, i.e., 1242139536 + 31539456 = 35244^2 + 5616^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 490093 + ... + 492684.

Almost surely, 2^1273678992 is an apocalyptic number.

1273678992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1273678992 is an abundant number, since it is smaller than the sum of its proper divisors (2412721286).

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

1273678992 is an equidigital number, since it uses as much as digits as its factorization.

1273678992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982797 (or 982782 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 1273678992 is about 35688.6395369731. The cubic root of 1273678992 is about 1083.9768198998.

The spelling of 1273678992 in words is "one billion, two hundred seventy-three million, six hundred seventy-eight thousand, nine hundred ninety-two".