1233643120 has 20 divisors (see below), whose sum is σ = 2868220440. Its totient is φ = 493457216.

The previous prime is 1233643079. The next prime is 1233643121. The reversal of 1233643120 is 213463321.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233643121) 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, 7710190 + ... + 7710349.

It is an arithmetic number, because the mean of its divisors is an integer number (143411022).

Almost surely, 2^1233643120 is an apocalyptic number.

1233643120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1233643120 is an abundant number, since it is smaller than the sum of its proper divisors (1634577320).

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

1233643120 is a wasteful number, since it uses less digits than its factorization.

1233643120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15420552 (or 15420546 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 1233643120 is about 35123.2561132934. The cubic root of 1233643120 is about 1072.4980560456.

The spelling of 1233643120 in words is "one billion, two hundred thirty-three million, six hundred forty-three thousand, one hundred twenty".