1245064800 has 288 divisors, whose sum is σ = 4759195392. Its totient is φ = 276756480.

The previous prime is 1245064789. The next prime is 1245064831. The reversal of 1245064800 is 84605421.

It is a Harshad number since it is a multiple of its sum of digits (30).

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 47 ways as a sum of consecutive naturals, for example, 620599 + ... + 622601.

It is an arithmetic number, because the mean of its divisors is an integer number (16524984).

Almost surely, 2^1245064800 is an apocalyptic number.

1245064800 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 1245064800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2379597696).

1245064800 is an abundant number, since it is smaller than the sum of its proper divisors (3514130592).

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

1245064800 is a wasteful number, since it uses less digits than its factorization.

1245064800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 1245064800 is about 35285.4757655328. The cubic root of 1245064800 is about 1075.7977996986.

The spelling of 1245064800 in words is "one billion, two hundred forty-five million, sixty-four thousand, eight hundred".