1244425280 has 112 divisors (see below), whose sum is σ = 3398495616. Its totient is φ = 425164800.

The previous prime is 1244425271. The next prime is 1244425291. The reversal of 1244425280 is 825244421.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

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, 776480 + ... + 778080.

Almost surely, 2^1244425280 is an apocalyptic number.

1244425280 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 1244425280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1699247808).

1244425280 is an abundant number, since it is smaller than the sum of its proper divisors (2154070336).

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

1244425280 is a wasteful number, since it uses less digits than its factorization.

1244425280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972 (or 1962 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

The square root of 1244425280 is about 35276.4125160142. The cubic root of 1244425280 is about 1075.6135758100.

The spelling of 1244425280 in words is "one billion, two hundred forty-four million, four hundred twenty-five thousand, two hundred eighty".