1227362656 has 48 divisors (see below), whose sum is σ = 2615899104. Its totient is φ = 563503104.

The previous prime is 1227362623. The next prime is 1227362657. The reversal of 1227362656 is 6562637221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227362657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72645 + ... + 87931.

It is an arithmetic number, because the mean of its divisors is an integer number (54497898).

Almost surely, 2^1227362656 is an apocalyptic number.

1227362656 is a gapful number since it is divisible by the number (16) 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 1227362656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1307949552).

1227362656 is an abundant number, since it is smaller than the sum of its proper divisors (1388536448).

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

1227362656 is a wasteful number, since it uses less digits than its factorization.

1227362656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15503 (or 15495 counting only the distinct ones).

The product of its digits is 181440, while the sum is 40.

The square root of 1227362656 is about 35033.7359697763. The cubic root of 1227362656 is about 1070.6749333058.

Adding to 1227362656 its reverse (6562637221), we get a palindrome (7789999877).

The spelling of 1227362656 in words is "one billion, two hundred twenty-seven million, three hundred sixty-two thousand, six hundred fifty-six".