1223642416 has 20 divisors (see below), whose sum is σ = 2447285824. Its totient is φ = 592084800.

The previous prime is 1223642363. The next prime is 1223642419. The reversal of 1223642416 is 6142463221.

1223642416 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (1223642419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1233015 + ... + 1234006.

Almost surely, 2^1223642416 is an apocalyptic number.

1223642416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1223642416 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1223642416 is a wasteful number, since it uses less digits than its factorization.

1223642416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2467060 (or 2467054 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 1223642416 is about 34980.6005665998. The cubic root of 1223642416 is about 1069.5920697298.

The spelling of 1223642416 in words is "one billion, two hundred twenty-three million, six hundred forty-two thousand, four hundred sixteen".