1227223740 has 96 divisors (see below), whose sum is σ = 3577351680. Its totient is φ = 313963776.

The previous prime is 1227223717. The next prime is 1227223747. The reversal of 1227223740 is 473227221.

1227223740 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1227223698 and 1227223707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227223747) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 281457 + ... + 285783.

It is an arithmetic number, because the mean of its divisors is an integer number (37264080).

Almost surely, 2^1227223740 is an apocalyptic number.

1227223740 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 1227223740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1788675840).

1227223740 is an abundant number, since it is smaller than the sum of its proper divisors (2350127940).

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

1227223740 is a wasteful number, since it uses less digits than its factorization.

1227223740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531 (or 4529 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 30.

The square root of 1227223740 is about 35031.7533103897. The cubic root of 1227223740 is about 1070.6345378855.

The spelling of 1227223740 in words is "one billion, two hundred twenty-seven million, two hundred twenty-three thousand, seven hundred forty".