1248956856 has 192 divisors, whose sum is σ = 4064785920. Its totient is φ = 338722560.

The previous prime is 1248956851. The next prime is 1248956857. The reversal of 1248956856 is 6586598421.

1248956856 is a `hidden beast` number, since 1 + 24 + 8 + 9 + 568 + 56 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248956851) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1889166 + ... + 1889826.

It is an arithmetic number, because the mean of its divisors is an integer number (21170760).

Almost surely, 2^1248956856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1248956856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2032392960).

1248956856 is an abundant number, since it is smaller than the sum of its proper divisors (2815829064).

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

1248956856 is a wasteful number, since it uses less digits than its factorization.

1248956856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 859 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The square root of 1248956856 is about 35340.5836963681. The cubic root of 1248956856 is about 1076.9176102067.

The spelling of 1248956856 in words is "one billion, two hundred forty-eight million, nine hundred fifty-six thousand, eight hundred fifty-six".