1245280000 has 180 divisors, whose sum is σ = 3195920728. Its totient is φ = 483840000.

The previous prime is 1245279989. The next prime is 1245280021. The reversal of 1245280000 is 825421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 6879910 + ... + 6880090.

Almost surely, 2^1245280000 is an apocalyptic number.

1245280000 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 1245280000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1597960364).

1245280000 is an abundant number, since it is smaller than the sum of its proper divisors (1950640728).

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

1245280000 is an frugal number, since it uses more digits than its factorization.

1245280000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 231 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1245280000 is about 35288.5250471028. The cubic root of 1245280000 is about 1075.8597772892.

The spelling of 1245280000 in words is "one billion, two hundred forty-five million, two hundred eighty thousand".