1227485900 has 72 divisors (see below), whose sum is σ = 2766385440. Its totient is φ = 472192000.

The previous prime is 1227485893. The next prime is 1227485911. The reversal of 1227485900 is 95847221.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 901220 + ... + 902580.

It is an arithmetic number, because the mean of its divisors is an integer number (38422020).

Almost surely, 2^1227485900 is an apocalyptic number.

1227485900 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 1227485900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1383192720).

1227485900 is an abundant number, since it is smaller than the sum of its proper divisors (1538899540).

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

1227485900 is a wasteful number, since it uses less digits than its factorization.

1227485900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715 (or 1708 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 1227485900 is about 35035.4948587857. The cubic root of 1227485900 is about 1070.7107689094.

The spelling of 1227485900 in words is "one billion, two hundred twenty-seven million, four hundred eighty-five thousand, nine hundred".