1223788236 has 24 divisors (see below), whose sum is σ = 3115097664. Its totient is φ = 370844880.

The previous prime is 1223788229. The next prime is 1223788243. The reversal of 1223788236 is 6328873221.

It is an interprime number because it is at equal distance from previous prime (1223788229) and next prime (1223788243).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4635430 + ... + 4635693.

It is an arithmetic number, because the mean of its divisors is an integer number (129795736).

Almost surely, 2^1223788236 is an apocalyptic number.

It is an amenable number.

1223788236 is an abundant number, since it is smaller than the sum of its proper divisors (1891309428).

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

1223788236 is a wasteful number, since it uses less digits than its factorization.

1223788236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9271141 (or 9271139 counting only the distinct ones).

The product of its digits is 193536, while the sum is 42.

The square root of 1223788236 is about 34982.6848026277. The cubic root of 1223788236 is about 1069.6345553772.

The spelling of 1223788236 in words is "one billion, two hundred twenty-three million, seven hundred eighty-eight thousand, two hundred thirty-six".