1232551992 has 128 divisors (see below), whose sum is σ = 3661862400. Its totient is φ = 338370048.

The previous prime is 1232551987. The next prime is 1232551993. The reversal of 1232551992 is 2991552321.

It is a self number, because there is not a number n which added to its sum of digits gives 1232551992.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232551993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 514734 + ... + 517122.

It is an arithmetic number, because the mean of its divisors is an integer number (28608300).

Almost surely, 2^1232551992 is an apocalyptic number.

1232551992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1232551992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1830931200).

1232551992 is an abundant number, since it is smaller than the sum of its proper divisors (2429310408).

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

1232551992 is a wasteful number, since it uses less digits than its factorization.

1232551992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525 (or 2521 counting only the distinct ones).

The product of its digits is 48600, while the sum is 39.

The square root of 1232551992 is about 35107.7198348170. The cubic root of 1232551992 is about 1072.1817631016.

The spelling of 1232551992 in words is "one billion, two hundred thirty-two million, five hundred fifty-one thousand, nine hundred ninety-two".