1293278980 has 48 divisors (see below), whose sum is σ = 3143185920. Its totient is φ = 437793408.

The previous prime is 1293278953. The next prime is 1293278993. The reversal of 1293278980 is 898723921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47407 + ... + 69526.

It is an arithmetic number, because the mean of its divisors is an integer number (65483040).

Almost surely, 2^1293278980 is an apocalyptic number.

1293278980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1293278980 is an abundant number, since it is smaller than the sum of its proper divisors (1849906940).

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

1293278980 is a wasteful number, since it uses less digits than its factorization.

1293278980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117028 (or 117026 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 1293278980 is about 35962.1881981617. The cubic root of 1293278980 is about 1089.5087930643.

The spelling of 1293278980 in words is "one billion, two hundred ninety-three million, two hundred seventy-eight thousand, nine hundred eighty".