1212884800 has 42 divisors (see below), whose sum is σ = 2984458598. Its totient is φ = 485153280.

The previous prime is 1212884723. The next prime is 1212884821. The reversal of 1212884800 is 84882121.

It can be written as a sum of positive squares in 3 ways, for example, as 111175936 + 1101708864 = 10544^2 + 33192^2 .

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 377427 + ... + 380626.

Almost surely, 2^1212884800 is an apocalyptic number.

1212884800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212884800 is an abundant number, since it is smaller than the sum of its proper divisors (1771573798).

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

1212884800 is an equidigital number, since it uses as much as digits as its factorization.

1212884800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758075 (or 758060 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 34.

The square root of 1212884800 is about 34826.4956606317. The cubic root of 1212884800 is about 1066.4484102055.

The spelling of 1212884800 in words is "one billion, two hundred twelve million, eight hundred eighty-four thousand, eight hundred".