1224738216 has 96 divisors (see below), whose sum is σ = 3600629760. Its totient is φ = 373838976.

The previous prime is 1224738149. The next prime is 1224738223. The reversal of 1224738216 is 6128374221.

It is a happy number.

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

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, 113721 + ... + 124023.

It is an arithmetic number, because the mean of its divisors is an integer number (37506560).

Almost surely, 2^1224738216 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 1224738216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1800314880).

1224738216 is an abundant number, since it is smaller than the sum of its proper divisors (2375891544).

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

1224738216 is a wasteful number, since it uses less digits than its factorization.

1224738216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10455 (or 10448 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 1224738216 is about 34996.2600287516. The cubic root of 1224738216 is about 1069.9112559235.

The spelling of 1224738216 in words is "one billion, two hundred twenty-four million, seven hundred thirty-eight thousand, two hundred sixteen".