1210845600 has 216 divisors, whose sum is σ = 4370157792. Its totient is φ = 315302400.

The previous prime is 1210845577. The next prime is 1210845607. The reversal of 1210845600 is 65480121.

1210845600 is a `hidden beast` number, since 1 + 2 + 10 + 8 + 45 + 600 = 666.

It is a super-2 number, since 2×1210845600² = 2932294134078720000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1210845607) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 307645 + ... + 311555.

It is an arithmetic number, because the mean of its divisors is an integer number (20232212).

Almost surely, 2^1210845600 is an apocalyptic number.

1210845600 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 1210845600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2185078896).

1210845600 is an abundant number, since it is smaller than the sum of its proper divisors (3159312192).

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

1210845600 is a wasteful number, since it uses less digits than its factorization.

1210845600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3980 (or 3964 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1210845600 is about 34797.2067844533. The cubic root of 1210845600 is about 1065.8504085104.

The spelling of 1210845600 in words is "one billion, two hundred ten million, eight hundred forty-five thousand, six hundred".