1227716464 has 80 divisors (see below), whose sum is σ = 2762635680. Its totient is φ = 523653120.

The previous prime is 1227716459. The next prime is 1227716473. The reversal of 1227716464 is 4646177221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158244 + ... + 165820.

It is an arithmetic number, because the mean of its divisors is an integer number (34532946).

Almost surely, 2^1227716464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1227716464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1381317840).

1227716464 is an abundant number, since it is smaller than the sum of its proper divisors (1534919216).

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

1227716464 is a wasteful number, since it uses less digits than its factorization.

1227716464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7658 (or 7652 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 1227716464 is about 35038.7851387573. The cubic root of 1227716464 is about 1070.7778034615. Note that the first 3 decimals are identical.

The spelling of 1227716464 in words is "one billion, two hundred twenty-seven million, seven hundred sixteen thousand, four hundred sixty-four".