1248855880 has 64 divisors (see below), whose sum is σ = 2918456640. Its totient is φ = 480598272.

The previous prime is 1248855869. The next prime is 1248855889. The reversal of 1248855880 is 885588421.

It is not an unprimeable number, because it can be changed into a prime (1248855889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109822 + ... + 120658.

It is an arithmetic number, because the mean of its divisors is an integer number (45600885).

Almost surely, 2^1248855880 is an apocalyptic number.

1248855880 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 1248855880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1459228320).

1248855880 is an abundant number, since it is smaller than the sum of its proper divisors (1669600760).

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

1248855880 is a wasteful number, since it uses less digits than its factorization.

1248855880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10958 (or 10954 counting only the distinct ones).

The product of its (nonzero) digits is 819200, while the sum is 49.

The square root of 1248855880 is about 35339.1550549812. The cubic root of 1248855880 is about 1076.8885871163. Note that the first 3 decimals are identical.

The spelling of 1248855880 in words is "one billion, two hundred forty-eight million, eight hundred fifty-five thousand, eight hundred eighty".