1227969800 has 24 divisors (see below), whose sum is σ = 2855030250. Its totient is φ = 491187840.

The previous prime is 1227969781. The next prime is 1227969913. The reversal of 1227969800 is 89697221.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 687593284 + 540376516 = 26222^2 + 23246^2 .

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, 3069725 + ... + 3070124.

Almost surely, 2^1227969800 is an apocalyptic number.

1227969800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1227969800 is an abundant number, since it is smaller than the sum of its proper divisors (1627060450).

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

1227969800 is a wasteful number, since it uses less digits than its factorization.

1227969800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6139865 (or 6139856 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 1227969800 is about 35042.4000319613. The cubic root of 1227969800 is about 1070.8514491057.

The spelling of 1227969800 in words is "one billion, two hundred twenty-seven million, nine hundred sixty-nine thousand, eight hundred".