1245033216 has 432 divisors, whose sum is σ = 4591641600. Its totient is φ = 315850752.

The previous prime is 1245033151. The next prime is 1245033259. The reversal of 1245033216 is 6123305421.

1245033216 is a `hidden beast` number, since 124 + 503 + 32 + 1 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1245033216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5209225 + ... + 5209463.

It is an arithmetic number, because the mean of its divisors is an integer number (10628800).

Almost surely, 2^1245033216 is an apocalyptic number.

1245033216 is a gapful number since it is divisible by the number (16) 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 1245033216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2295820800).

1245033216 is an abundant number, since it is smaller than the sum of its proper divisors (3346608384).

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

1245033216 is a wasteful number, since it uses less digits than its factorization.

1245033216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 1245033216 is about 35285.0282131104. The cubic root of 1245033216 is about 1075.7887029070.

Adding to 1245033216 its reverse (6123305421), we get a palindrome (7368338637).

The spelling of 1245033216 in words is "one billion, two hundred forty-five million, thirty-three thousand, two hundred sixteen".