1227678120 has 320 divisors, whose sum is σ = 4516300800. Its totient is φ = 297768960.

The previous prime is 1227678059. The next prime is 1227678161. The reversal of 1227678120 is 218767221.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1707121 + ... + 1707839.

It is an arithmetic number, because the mean of its divisors is an integer number (14113440).

Almost surely, 2^1227678120 is an apocalyptic number.

1227678120 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 1227678120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2258150400).

1227678120 is an abundant number, since it is smaller than the sum of its proper divisors (3288622680).

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

1227678120 is a wasteful number, since it uses less digits than its factorization.

1227678120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790 (or 777 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 1227678120 is about 35038.2379693957. The cubic root of 1227678120 is about 1070.7666558465.

The spelling of 1227678120 in words is "one billion, two hundred twenty-seven million, six hundred seventy-eight thousand, one hundred twenty".