1247784960 has 208 divisors, whose sum is σ = 4170726144. Its totient is φ = 317915136.

The previous prime is 1247784959. The next prime is 1247784961. The reversal of 1247784960 is 694877421.

It is an interprime number because it is at equal distance from previous prime (1247784959) and next prime (1247784961).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (1247784961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1412679 + ... + 1413561.

It is an arithmetic number, because the mean of its divisors is an integer number (20051568).

Almost surely, 2^1247784960 is an apocalyptic number.

1247784960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1247784960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2085363072).

1247784960 is an abundant number, since it is smaller than the sum of its proper divisors (2922941184).

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

1247784960 is an equidigital number, since it uses as much as digits as its factorization.

1247784960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 916 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 48.

The square root of 1247784960 is about 35323.9997735251. Note that the first 3 decimals coincide. The cubic root of 1247784960 is about 1076.5806809359.

The spelling of 1247784960 in words is "one billion, two hundred forty-seven million, seven hundred eighty-four thousand, nine hundred sixty".