1247053678 has 16 divisors (see below), whose sum is σ = 2079455616. Its totient is φ = 556996320.

The previous prime is 1247053673. The next prime is 1247053681. The reversal of 1247053678 is 8763507421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1247053673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 772801 + ... + 774412.

It is an arithmetic number, because the mean of its divisors is an integer number (129965976).

Almost surely, 2^1247053678 is an apocalyptic number.

1247053678 is a deficient number, since it is larger than the sum of its proper divisors (832401938).

1247053678 is a wasteful number, since it uses less digits than its factorization.

1247053678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1547259.

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 1247053678 is about 35313.6471919851. The cubic root of 1247053678 is about 1076.3703247318.

The spelling of 1247053678 in words is "one billion, two hundred forty-seven million, fifty-three thousand, six hundred seventy-eight".