1223240188 has 12 divisors (see below), whose sum is σ = 2233743120. Its totient is φ = 585027872.

The previous prime is 1223240147. The next prime is 1223240201. The reversal of 1223240188 is 8810423221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6647953 + ... + 6648136.

It is an arithmetic number, because the mean of its divisors is an integer number (186145260).

Almost surely, 2^1223240188 is an apocalyptic number.

It is an amenable number.

1223240188 is a deficient number, since it is larger than the sum of its proper divisors (1010502932).

1223240188 is a wasteful number, since it uses less digits than its factorization.

1223240188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13296116 (or 13296114 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 1223240188 is about 34974.8507931056. The cubic root of 1223240188 is about 1069.4748603715.

The spelling of 1223240188 in words is "one billion, two hundred twenty-three million, two hundred forty thousand, one hundred eighty-eight".