1273454680 has 16 divisors (see below), whose sum is σ = 2865273120. Its totient is φ = 509381856.

The previous prime is 1273454671. The next prime is 1273454681. The reversal of 1273454680 is 864543721.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 31836367 = 1273454680 / (1 + 2 + 7 + 3 + 4 + 5 + 4 + 6 + 8 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1273454681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15918144 + ... + 15918223.

It is an arithmetic number, because the mean of its divisors is an integer number (179079570).

Almost surely, 2^1273454680 is an apocalyptic number.

1273454680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1273454680 is an abundant number, since it is smaller than the sum of its proper divisors (1591818440).

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

1273454680 is a wasteful number, since it uses less digits than its factorization.

1273454680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31836378 (or 31836374 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 40.

The square root of 1273454680 is about 35685.4967738996. The cubic root of 1273454680 is about 1083.9131818651.

The spelling of 1273454680 in words is "one billion, two hundred seventy-three million, four hundred fifty-four thousand, six hundred eighty".