1248618280 has 256 divisors, whose sum is σ = 3628154880. Its totient is φ = 376233984.

The previous prime is 1248618271. The next prime is 1248618311. The reversal of 1248618280 is 828168421.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9831577 + ... + 9831703.

It is an arithmetic number, because the mean of its divisors is an integer number (14172480).

Almost surely, 2^1248618280 is an apocalyptic number.

1248618280 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 1248618280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814077440).

1248618280 is an abundant number, since it is smaller than the sum of its proper divisors (2379536600).

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

1248618280 is a wasteful number, since it uses less digits than its factorization.

1248618280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 264 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 1248618280 is about 35335.7931848147. The cubic root of 1248618280 is about 1076.8202886145.

The spelling of 1248618280 in words is "one billion, two hundred forty-eight million, six hundred eighteen thousand, two hundred eighty".